Question

1+5=18,2+10=36,3+15=54,4+20=?​

Answer 1

Answer:

4+20=72

Step-by-step explanation:

The pattern here is that 2 gets multiplied with each passing terms.

First, it is 1+5=18

Then 2 (1+5=18) = 2+10 = 36

continuing the pattern, We will get;

4+20=72

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