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JEE Main 20209 JanuaryMorning Shift

Exam: JEE Main
Year: 2020
Date: 9 January
Shift: Morning Shift
Subject: Mathematics
Chapter: Permutation and Combination

JEE Main 2020 · 9 January · Morning Shift · Mathematics · Permutation and Combination

If the number of five digit numbers with distinct digits and 2 at...

If the number of five digit numbers with distinct digits and

2

at the

{10}^{th}

place is

336k

, then

k

is equal to:

Options

A $4$
B $6$
C $7$
D $8$

Correct answer

D. $8$

Step-by-step solution

2

Total Number of numbers

= 8 \times 8 \times 7 \times 6 = 2688 = 336k ⇒ k = 8

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