Missing Series 25, 49, 92, ? , 177, 219, 280 Ans. 125 but how
Answers
Given : 25, 49, 92, ? , 177, 219, 280
To Find : Missing number
Solution:
25 49 92 ? 177 219 280
25 49 92 X 177 219 280
24 43 X-92 177-X 42 61
Difference between 24 and 42 is 18
Difference between 43 and 61 is 18
Hence X-92 should be 33 ( mean of 24 and 42)
and 177-X should be 52 ( mean of 43 and 61)
Lets Check
X - 92 = 33 => X = 125
177 - X = 52 => X = 125
25 49 92 125 177 219 280
24 43 33 52 42 61
Alternate series are going on with difference
24 , 33 , 42
43 , 52 , 61
So missing number is 125
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