Civil Service Exam Reviewer · Number Series · hard

What number(s) should complete the series: 10, 17, 28, 41, 58, 77, ?

1. 100
2. 96
3. 102
4. 99

Answer

A. 100

Solution

Differences are consecutive primes 7, 11, 13, 17, 19; next difference 23: 100.

More Number Series questions

1. What number(s) should complete the series: 7, 8, 12, 21, 37, 62, ?
2. What number(s) should complete the series: 19, 23, 29, 31, 37, ?
3. What letter should complete the series: A, C, F, J, O, ?
4. What number(s) should complete the series: 3, 9, 5, 15, 11, 33, ?
5. What number(s) should complete the series: 8, 15, 29, 57, 113, ?
6. What number(s) should complete the series: 18, 23, 30, 39, 50, 63, ?
7. What number(s) should complete the series: 2, 6, 12, 72, 864, ?
8. What should complete the series: XLI, XXXV, XXIX, XXIII, ?
9. What letter pair should complete the series: CX, EV, GT, IR, ?
10. What number(s) should complete the series: 6, 13, 26, 33, 66, 73, ?

All Number Series questions