What will come in place of the question mark (?) in each of the following series? 30, 61, 38, ?, 46, 77
215
216
214
213
None of these
The pattern followed here is +31, -23, +31, -23 and so on.
What will come in place of the question mark (?) in each of the following series? 9, 12, 21, 48, 129, ?
What will come in place of the question mark (?) in each of the following series? 15, 35, 30, 32, 60, 29, 120, ?
What will come in place of the question mark (?) in each of the following series? 4, 6, 16, 62, 308, ?