Math, asked by surajmandal5021, 1 month ago

Missing Series 25, 49, 92, ? , 177, 219, 280 Ans. 125 but how​

Answers

Answered by amitnrw
0

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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