What should come in place of question mark?
18
40
21
24
(first row 1st value) × (second row 1st value - 1)
What should come in place of the question mark? QAR, RAS, SAT, TAU, ?
What should come in place of the question mark (?) in the following number series? 4, 16, 36, 64, 100, ?
What should come in place of the question mark (?) in the following number series? 32, 49, 83, 151, 287, 559, ?
What should come in place of the question mark (?) in the following number series? 102, 99, 104, 97, 106, ?