What is the last number in the series.?0, 7, 26, 63, 124, 215, …

You can solve these types of questions without even thinking. How??

Solve these types of problems(most of them) only in two steps.

Step1: Subtract each number with its previous number.

Step2: Repeat step1 until you find a pattern.

Now come back adding the pattern, here it is 6.

so the next number will be 30+6=36,

next will be 91+36=127,

next will be 215+127=342

Congrats you got the answer.