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Re: IF n = 100! x 100!, what is the largest value of prime numbe [#permalink]
26 Oct 2017, 04:33

If we multiply 100! by 100! we get all the numbers from 1 to 100 twice so that in order to get an integer 100!*100! must be divided by a number between 1 and 100 or a number resulting from the multiplication of some of them.

Since we are asked about the highest prime number, we should start checking answers from E.

- 101 is not between 1 and 100 and it cannot be computed as the product of some numbers between them. - 99 is not prime since it is divisible also by 9 - 97 is prime and it is between 1 and 100. That's our choice

Answer C

greprepclubot

Re: IF n = 100! x 100!, what is the largest value of prime numbe
[#permalink]
26 Oct 2017, 04:33