barb28
contestada

I have a question on my problem of the week, it says if n=15!+35!,how many of the nine prime numbers less than 25 are divisors of n? I need help ASAP!!

Relax

Respuesta :

15!+35!=15!(1+(35!-15!)) so I believe 35!-15!+1 is a prime number so we just have to find the primes in 15! so 2,3,5,7,11,13