Instructions

What should come in place of question mark (?) in the following number series ?

Question 102

4, 6, 9, 13.5, 20.25, 30.375, ?

Solution

1.5 is multiplied to each number

4 $$\times 1.5$$ = 6

6 $$\times 1.5$$ = 9

9 $$\times 1.5$$ = 13.5

13.5 $$\times 1.5$$ = 20.25

20.25 $$\times 1.5$$ = 30.375

30.375 $$\times 1.5$$ = 45.5625


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