Introgers

Send your answers along with your full name and any prior I.Q. test scores to skillitani@gmail.com. Only one attempt is allowed.

There is no time limit. A calculator, pencil, and paper are allowed. Find what replaces each question mark.

Important: Series #12 was revised on 3 October, 2024.

1) 1, 2, 4, 8, 16, ?

2) 2, 6, 12, 20, 30, ?

3) 1, 4, 9, 16, 25, ?

4) 2, 3, 5, 8, 12, ?

5) 1, 1, 2, 6, 24, ?

6) 3, 8, 15, 24, 35, ?

7) 1, 2, 2, 4, 8, 32, ?

8) 2, 5, 12, 27, 58, ?

9) 5, 10, 20, 37, 63, ?, 150

10) 1, 103, 3, 305, 5, 507, 7, ?

11) 123, 132, 141, ?, 16-1

12) 3, 3, 6, 12, 15, 21, 24, 30, ?

13) 73746251, 848362, ?, 104

14) 623, 949, 1898, 10879, ?

15) 0, 3, 9, 21, 45, ?

16) 1, 2, 6, ?, 1806

17) 3, 13, 1113, 3113, 132113, ?

18) 34, ?, 89, 17, 1819, 19, 2021, 5

19) 2345, 6345, 61245, 61845, ?

20) 1, 22, 333, 4250, ?, 87275777

Preliminary Norms