Welcome to the LEAP Q&A Forum

Find your questions answered. Here.

GRE - Quantitative Reasoning - Factors & multiples

Which of the following is a factor of 18!+1?

Which of the following is a factor of 18! 1?
A. 15 
B. 17 
C. 19 
D. 33 
E. 39

Two consecutive numbers never share a factor

factors of 18! include, 15, 17, 33 (11*3), 39 (13*3)

So the only correct option is 19