ah, thanks for explaining...very much appreciated.

stuck on prime factor Q

for every positive even integer n, the function h(n) is defined to be the product of all the even integers from 2 to n, inclusive. if p is the smallest prime factor of h(100)+1, then p is

a. between 2 and 10
b. between 10 and 20
c. between 20 and 30
d. between 30 and 40
e. greater than 40

????

Circle on XY plane Q

can someone pleae explain to me why the answer is b? in the figure above, points P and Q lie on the circle with center O. what is the value of S? illustration: P and Q are radii of a circle that meet at the center of the circle which is at x, y coordinate 0,0. their segments form a right angle that ...