if x is the addition of the prime numbers between 1 and 6; and y the H.C.F. of 6, 9, 15. Find the product of x and y
A
27
B
30
C
33
D
90
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
Prime numbers between 1 and 6 are 2, 3, and 5
x = 2 + 3 + 5 = 10
H.C.F. of 6, 9, 15 = 3
∴ y = 3
X x Y = 10 x 3 = 30
Source: Myschool Past Questions Archive (Record #31649)