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Find the missing number in the series 7,4,5,9,20,? a) 48.5 b)49.5 c)52.5 D)46.5

Find the missing number in the series 7,4,5,9,20,? a) 48.5 b)49.5 c)52.5 D)46.5
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4 votes
Find the missing number in the series

7,4,5,9,20,?
a) 48.5
b)49.5
c)52.5
D)46.5

User Rohan Dalvi
by
8.4k points

2 Answers

5 votes
The correction answer is C - 52.5
User IEngineer
by
8.9k points
3 votes

Hello!

the logic behind the series is:

  • (7 * 0.5) + 0.5 = 4
  • (4 * 1) + 1 = 5
  • (5 * 1.5) + 1.5 = 9
  • (9 * 2) + 2 = 20
  • (20 * 2.5) + 2.5 = 52.5
User Sandeep Fatangare
by
8.3k points
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