Edit MetaData
8 years, 8 months ago
what is the remainder when 25! is divided by 29?
8 years, 8 months ago
29 is prime. So, 28! mod 29 = 28
25! * 26*27*28 mod 29 = 28
=> R*(-3)*(-2)*(-1) mod 29 = 28
=> -6R mod 29 = 28
or, 23 R mod 29 = 28
When R = 5, the equation becomes 115 mod 29 = 28, which is true.
So, the remainder is 5.
Day-wise Structured & Planned Preparation Guide
By proceeding you agree to create your account
Free CAT Schedule PDF will be sent to your email address soon !!!