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NDA Binomial Theorem PYQs with Solutions

79 previous year questions from Binomial Theorem (NDA Mathematics) with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

79 questionsMathematics2010–2026Answers + solutions

About Binomial Theorem PYQs

Binomial Theorem has 79 previous year questions in the Quantrex Academy NDA Mathematics bank. The 79 questions in this list come from NDA (79), spanning 2010 to 2026. Each question opens on its own page with the options, the correct answer and the worked solution where available.

Questions by year (this list)

  • 2026: 7
  • 2025: 5
  • 2024: 7
  • 2023: 7
  • 2022: 9
  • 2021: 6
  • 2020: 3
  • 2019: 5
  • 2018: 6
  • 2017: 4
  • 2015: 4
  • 2014: 6

Binomial Theorem questions with solutions

1

A set S contains (2n+1) elements. If the number of subsets of S which contain at most n elements is 1024 , then what is the value of n ?

NDA 2026 Solution
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2

Passage: Let u be a positive integer and f be a real number lying between 0 and 1 . Further, ( 2 +1)^ 10 =u+f and ( 2 -1)^ 10 =v . Question: Consider the following statements : I.

NDA 2026 Solution
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3

Passage: Let u be a positive integer and f be a real number lying between 0 and 1 . Further, ( 2 +1)^ 10 =u+f and ( 2 -1)^ 10 =v . Question: What is the value of u ?

NDA 2026 Solution
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4

What is the greatest value of r satisfying the inequality 15 r+1 > 2× ^ 15 C_r ?

NDA 2026 Solution
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5

Passage: Let u be a positive integer and f be a real number lying between 0 and 1 . Further, ( 2 +1)^ 10 =u+f and ( 2 -1)^ 10 =v . Question: What is the value of uv ?

NDA 2026 Solution
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6

Passage: Let u be a positive integer and f be a real number lying between 0 and 1 . Further, ( 2 +1)^ 10 =u+f and ( 2 -1)^ 10 =v . Question: What is the value of (v+f) ?

NDA 2026 Solution
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7

Passage: Let u be a positive integer and f be a real number lying between 0 and 1 . Further, ( 2 +1)^ 10 =u+f and ( 2 -1)^ 10 =v . Question: What is the multiplicative inverse of

NDA 2026 Solution
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8

If the sum of binomial coefficients in the expansion of (x + y)^n is 256, then the greatest binomial coefficient occurs in which one of the following terms?

NDA 2025 Solution
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9

If k < ( 2 +1)^3 < k+2 , where k is a natural number, then what is the value of k ?

NDA 2025 Solution
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10

What is the remainder when 5^ 99 is divided by 13 ?

NDA 2025 Solution
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11

What is the number of rational terms in the expansion of (3^ (1)/(2) + 5^ (1)/(4) )^ 12 ?

NDA 2025 Solution
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12

Which one of the following is the greatest coefficient in the expansion of (1 + x)^ 100 ?

NDA 2025 Solution
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13

In the expansion of (1+x)^p(1+x)^q , if the coefficient of x^3 is 35 , then what is the value of (p+q) ?

NDA 2024 Solution
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14

What is the remainder when 7^n-6 n is divided by 36 for n=100 ?

NDA 2024 Solution
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15

Paragraph: Let (8+3 7 )^ 20 =U+V and (8-3 7 )^ 20 =W , where U is an integer and 0 Question: What is V+W equal to?

NDA 2024 Solution
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16

Paragraph: Let (8+3 7 )^ 20 =U+V and (8-3 7 )^ 20 =W , where U is an integer and 0 Question: What is the value of (U+V) W ?

NDA 2024 Solution
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17

In a binomial expansion of (x+y)^ 2 n+1 (x-y)^ 2 n+1 , the sum of middle terms is zero. What is the value of ((x^2)/(y^2)) ?

NDA 2024 Solution
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18

What is the coefficient of x^ 10 in the expansion of (1-x^2)^ 20 (2-x^2-(1)/(x^2))^ -5 ?

NDA 2024 Solution
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19

If the 4th term in the expansion of (m x+(1)/(x))^n is (5)/(2) , then that is the value of m n ?

NDA 2024 Solution
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20

A set S contains (2n +1) elements. There are 4096 subset of S which contain at most n elements. what is n equal to

NDA 2023 Solution
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21

Let (1+x)^n=1+T_1 x+T_2 x^2+T_3 x^3+…+T_n x^n What is 1-T_1+2 T_2-3 T_3+…+(-1)^n n T_n equal to?

NDA 2023 Solution
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22

Let (1+x)^n=1+T_1 x+T_2 x^2+T_3 x^3+…+T_n x^n What is T_1+2 T_2+3 T_3+…+n T_n equal to?

NDA 2023 Solution
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23

Let (1+x)^n=1+T_1 x+T_2 x^2+T_3 x^3+…+T_n x^n What is T_1+T_2+T_3+…+T_n equal to ?

NDA 2023 Solution
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24

If the sixth term in the binomial expansion of (x^ -(8)/(3) +x^2 _ 10 x)^8 is 5600 , then what is the value of x ?

NDA 2023 Solution
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25

How many terms are there in the expansion of (3 x-y)^4(x+3 y)^4 ?

NDA 2023 Solution
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26

Consider the following statements for a fixed natural number n : 1. C(n, r) is greatest if n=2 r 2. C(n, r) is greatest if n=2 r-1 and n=2 r+1 Which of the statements given above

NDA 2023 Solution
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27

Paragraph: Consider the binomial expansion of (p+q x)^9 : Question: What is the ratio of the coefficients of middle terms in the expansion (when expanded in ascending powers of x

NDA 2022 Solution
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28

How many terms are there in the expansion of (1+(2)/(x))^9(1-(2)/(x))^9 ?

NDA 2022 Solution
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29

Paragraph: Consider the binomial expansion of (p+q x)^9 : Question: Under what condition the coefficients of x^2 and x^4 are equal?

NDA 2022 Solution
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30

In the expansion of (x+(1)/(x))^ 2 n , what is the (n+1) th term from the end (when arranged in descending powers of x )?

NDA 2022 Solution
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31

Consider the following statements in respect of the expansion of (x+y)^ 10 : 1. Among all the coefficients of the terms, the coefficient of the 6th term has the highest value 2.

NDA 2022 Solution
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32

Paragraph: Consider the binomial expansion of (p+q x)^9 : Question: What is the value of q if the coefficients of x^3 and x^6 are equal ?

NDA 2022 Solution
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33

What is ∑_ r=0 ^n 2^r C(n, r) equal to?

NDA 2022 Solution
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34

If n > 7 , then what is the probability that C(n, 7) is a multiple of 7?

NDA 2022 Solution
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35

What is the value of C(51,21)-C(51,22)+C(51,23)-C(51,24)+C(51,25)-C(51,26)+C(51,27)-C(51,28)+C(51,29)-C(51,30) ?

NDA 2022 Solution
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36

How many terms are there in the expansion of ((a^2)/(b^2)+(b^2)/(a^2)+2)^ 21 where a ≠ 0, b ≠ 0 ?

NDA 2021 Solution
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37

If C_0, C_1, C_2, …, C_n are the coefficients in the expansion of (1+x)^n , then what is the value of C_1+C_2+C_3+…+C_n ?

NDA 2021 Solution
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38

What is C(n, 1)+C(n, 2)+…+C(n, n) equal to?

NDA 2021 Solution
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39

What is the coefficient of the middle term in the expansion of (1+4 x+4 x^2)^5 ?

NDA 2021 Solution
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40

What is the sum of the coefficients of first and last terms in the expansion of (1+x)^ 2 n , where n is a natural number?

NDA 2021 Solution
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41

Consider the expansion of (1+x)^n . Let p, q, r and s be the coefficients of first, second, n^ th and (n+1)^ th terms respectively. What is (p s+q r ) equal to?

NDA 2021 Solution
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42

What is the sum of the last five coefficients in the expansion of (1+x)^9 when it is expanded in ascending powers of x ?

NDA 2020 Solution
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43

If (1+2 x-x^2)^6=a_0+a_1 x+a_2 x^2+… .+a_ 12 x^ 12 , then what is a_0-a_1+a_2-a_3+a_4-… .+a_ 12 equal to?

NDA 2020 Solution
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44

The term independent of x in the binomial expansion of ((2)/(x^2)- x )^ 10 is equal to

NDA 2020 Solution
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45

If the middle term in the expansion of (x^2+(1)/(x))^ 2 x 184756 x^ 10 , then what is the value of n ?

NDA 2019 Solution
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46

In the expansion of (1+a x)^ n , the first three terms are respectively 1,12 x and 64 x^2 . What is n equal to?

NDA 2019 Solution
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47

If the constant term in the expansion of ( x -(k)/(x^2))^ 10 is 405 , then what can be the values of k ?

NDA 2019 Solution
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48

How many terms are there in the expansion of (1+2 x+x^2)^5+(1+4 y+4 y^2)^5 ?

NDA 2019 Solution
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49

What is the number of terms in the expansion of [(2 x-3 y)^2..(2 x+3 y)^2]^2 ?

NDA 2019 Solution
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50

What is the coefficient of the middle term in the binomial expansion of (2+3 x)^4 ?

NDA 2018 Solution
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51

Let the coefficient of the middle term of the binomial expansion of (1+x)^ 2 n be α and those of two middle terms of the binomial expansion of (1+x)^ 2 n-1 be β and γ . Which one

NDA 2018 Solution
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52

In the expansion of (1+x)^ 43 , if the coefficients of (2 r+1)^ th and (r+2)^ th terms are equal, then what is the value of r(r ≠ 1) ?

NDA 2018 Solution
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53

If the coefficients of ^ m and ^ n in the expansion of (1+a)^ m+n are α and β , then which one of the following is correct?

NDA 2018 Solution
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54

What is the number of non-zero terms in the expansion of (1+2 3 x)^ 11 +(1-2 3 x)^ 11 (after simplification)?

NDA 2018 Solution
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55

What is C(n, r)+2 C(n, r-1)+C(n, r-2) equal to?

NDA 2018 Solution
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56

The number of terms in the expansion of (x+a)^ 100 +(x-a)^ 100 after simplification is

NDA 2017 Solution
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57

The expansion of (x-y)^n, n ≥ 5 is done in the descending powers of x . If the sum of the fifth and sixth terms is zero, then (x)/(y) is equal to

NDA 2017 Solution
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58

In the expansion of (1+x)^ 50 , the sum of the coefficients of odd powers of x is

NDA 2017 Solution
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59

The value of [C(7,0)+C(7,1)]+[C(7,1)+C(7,2)]+…..+[C(7,6)+C(7,7)] is

NDA 2017 Solution
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60

In the expansion of ( x + 1 3 x^2 )^ 10 the value of constant term (independent of x ) is

NDA 2015 Solution
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61

Consider the expansion of (1+x)^ 2 n+1 If the coefficients of x^r and x^ r+1 are equal in the expansion, then r is equal to

NDA 2015 Solution
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62

Consider the expansion of (1+x)^ 2 n+1 The sum of the coefficients of all the terms in the expansion is

NDA 2015 Solution
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63

What is \(∑_ r=0 ^1 n+r n \) equal to?

NDA 2015 Solution
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64

Consider the expansion (x^2+(1)/(x))^ 15 . What is the independent term in the given expansion?

NDA 2014 Solution
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65

Consider the expansion (x^2+(1)/(x))^ 15 . Consider the following statements: 1. The term containing x^2 does not exist in the given expansion. 2. The sum of the coefficients of

NDA 2014 Solution
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66

Consider the expansion (x^2+(1)/(x))^ 15 . What is the ratio of coefficient of x^ 15 to the term independent of x in the given expansion?

NDA 2014 Solution
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67

Paragraph: In the expansion of (x^3-(1)/(x^2))^n , where n is a positive integer, the sum of the coefficients of x^5 and x^ 10 is 0. Question: What is the value of the independent

NDA 2014 Solution
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68

Paragraph: In the expansion of (x^3-(1)/(x^2))^n , where n is a positive integer, the sum of the coefficients of x^5 and x^ 10 is 0. Question: What is n equal to?

NDA 2014 Solution
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69

Paragraph: In the expansion of (x^3-(1)/(x^2))^n , where n is a positive integer, the sum of the coefficients of x^5 and x^ 10 is 0. Question: What is the sum of the coefficients

NDA 2014 Solution
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70

How many terms are there in the expansion of (1+2 x+x^2)^ 10 ?

NDA 2013 Solution
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71

What is ∑_ r=0 ^n C(n, r) equal to?

NDA 2013 Solution
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72

In the expansion of (1+x)^n , what is the sum of even binomial coefficients?

NDA 2012 Solution
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73

The value of the term independent of x in the expansion of (x^2-(1)/(x))^9 is

NDA 2012 Solution
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74

What is the ratio of coefficient of x^ 15 to the term independent of x in (x^2+(2)/(x))^ 15 ?

NDA 2011 Solution
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75

What is the middle term in the expansion of (1-(x)/(2))^8 ?

NDA 2011 Solution
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76

What is the number of terms in the expansion of (a+b+c)^n, n ∈ ℕ ?

NDA 2010 Solution
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77

What is the coefficient of x^ 17 in the expansion of (3 x-(x^3)/(6))^9 ?

NDA 2010 Solution
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78

What is the coefficient of x^4 in the expansion of ((1-x)/(1+x))^2 ?

NDA 2010 Solution
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79

What is the sum of all the coefficients in the expansion of (1+x)^n ?

NDA 2010 Solution
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