Question

What number would complete the pattern 14 5 18 24 15 28 34

Answer 1

Sequence:                                      14    5    18    24    15    28    34
difference between each number:    -9   13    6      -9     13     6

The difference between each number goes -9 then 13 then 6 so the next number in the sequence would have difference of -9. Therefore the next number in the sequence would be 25. 

Answer 2

You add 10 to each number in the series of three. If you break the pattern into groups of three you will see 8-14-5 then 18-24-15 etc.

so 8+10=18+10=28, 14+10=24+10=34, 5+10=15+10=25,

it would be 25.