If in registering for WAEC, only 1500 candidates registered on the first day but twice the number registered subsequently till the sixth day, how many candidates would have registered?
A. 10,000 B. 15,000 C. 15,500 D. 16,500
Correct Answer: C
Explanation
The number of candidates registered doubles each day after the first. So, on the sixth day, there would be \( 1500 \times 2^5 = 48,000 \) candidates. Adding the registrations from each day gives \( 1500 + 3000 + 6000 + 12000 + 24000 + 48000 = 93300 \) candidates.