Ascending Sequence Problem: Find First Positive in -10,-7, _, _, _

Question

Look at the ascending sequence:

$-10, -7, \_ , \_ , \_$

Which element contains the first positive number?

00:00 Find the first positive element

00:04 Find the difference between each element

00:09 This is the sequence's pattern

00:15 Continue calculating sequence elements until we reach the positive element

00:30 This is the first positive element

00:37 Find its position in the sequence

00:45 And this is the solution to the question

Fifth element