Which number replaces the Question mark - 3,9,17,27,??
Answers
Answered by
5
39
9-3=6
17-9=8
27-17=10
therefore the value of addition increases by 2 plus the previous difference
therefor the difference between ??&27=12
.'.??=39
9-3=6
17-9=8
27-17=10
therefore the value of addition increases by 2 plus the previous difference
therefor the difference between ??&27=12
.'.??=39
Answered by
1
Given: A series- 3, 9, 17, 27, ?
To find: The number that can replace the question mark
Solution:
The given series is- 3, 9, 17, 27, ?
On carefully observing, we find that,
∵ 3 + 6 = 9
∵ 9 + 8 = 17
∵ 17 + 10 = 27
i.e., every number is the sum of preceeding number and an even number (starting from 6).
So, based on the pattern followed, the next number is:
∴ 27 + 12 = 39
Hence, 39 replaces the question mark.
∴ The series is: 3, 9, 17, 27, 39
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