What character should replace the question mark in the sequence 3, 6, 9, ?, 15?

C. 12

Solve the quadratic equation x^2 - 4x - 5 = 0. What is the sum of the roots?

B. 4

If 'HELLO' is coded as '851212', what is the code for 'WORLD'?

B. 231218

Input: '5 10 2 8'. After rearranging in descending order, what is the output?

A. 10 8 5 2

If today is March 15, 2023, what date will it be 45 days from today?

A. APRIL 29, 2023