JEE Main20257 Apr 2025Morning ShiftMathematicsBinomial TheoremActual
The remainder when ((64)^ (64) )^ (64) is divided by 7 is equal to
Options
- A4
- B1
- C3
- D6
Correct answer
B. 1
Step-by-step solution
Let N = ((64)⁶⁴ )⁶⁴ N =(64)^ 64^2 N =(1+63)^ 64^2 , let 64^2= n Expanding by binomial aligned & N =(1+63)^ n =1+ ^ n C ₁ 63+ ^ n C ₂(63)^2+ . & =1+63 =1+7(9 ) aligned Remainder when divided by 7 is 1