Medium
Find the missing term in the number series: 10, 100, 200, (?), 430
Explanation
Explanation
The differences between consecutive terms increase by 10 each time: 100-10=90, then the next difference is 100, then 110, then 120. So 200+110=310 is the missing term, and 310+120=430 checks out.
PRO TIP
Re-check your working by substituting the answer back into the original question.