If x is an integer and 1 ≤ x ≤ 100, what is the probability that x(x + 1) is a multiple of 12 and 9?
Pick:
A) 1/25
B) 1/20
C) 2/25
D) 11/100
E) 1
x(x+1) is a number that is divisible by both 12 and 9   for x = 27, 71,72, 80 we get number ie divisible by both 12 and 9   so probability would be 4/100 = 1/25   1/25NSWER:1/25
<result>A</result>
If x is an integer and 1 ≤ x ≤ 100, what is the probability that x(x + 1) is a multiple of 12 and 9?