The nth term of two sequences are Qn = 3 . 2n - 2 and Um = 3 . 22m - 3. Find the product of Q2 and U2.
A
18
B
12
C
6
D
3
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
Qn = 3 * 2n - 2
Um = 3 * 22m - 3
Q2 * U2 = (3 * 22 - 2) * (3 * 22(2) - 3)
= 3 * 20 * 3 * 21
= 3 * 1 * 3 * 2
= 18
Source: Myschool Past Questions Archive (Record #8204)