Questions

60 mins Expert Faculty Ask Questions

a

42

b

12

c

26

d

46

detailed solution

Correct option is B

Given digits are 1, 2, 5, 6, 7

A number is divisible by 25 when last 2 digits of the number is divisible by 25.

Last 2 boxes can be filled by 25, 75 in 2 ways

Remaining 2 boxes can be filled by remaining 3 digits in ${}^{3}{P}_{2}$

$\therefore $

$=12$

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