563, 647, 479, 815, (…)

4, -8, 16, -32, 64, ?

Find the missing number?

Complete the series choosing the missing letter

__ aaba __ aa__ __aa

24, 60, 120, 210, (…)

In the following question, select the number which can be placed at the sign of (?) from the given alternatives.

2, 3, 5, 6 ,? , 9, ?, 12

1,9,17,33,49,73 (…)