What number completes the problem 14 5 18 24 15 28 34

First, we need to find a pattern, let's start by taking the first three numbers 14, 5, and 18.

So the fourth number is 24. Which is the first number, 14, with an addition of 10. As in 14+10=24.

The fifth number is 15. Which is the second number, 5, with an addition of 10 Or 5+10=15.

And the sixth number is 28. Which is the third number, 18, with an addition of 10 Or 18+10=28.

So, the pattern is a +10 in the first three numbers. The second set of three numbers becomes 24, 15, and 28.

The next (third) set of three numbers seventh, eighth and ninth number) should be: (24+10=34), (15+10=25) and (28+10=38).

So, your answer is 25, Or the eighth number of the series.

Answer is either b or c