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nverma
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D should be the ans...

Lets take other numbers to be 148 and 146. Adding these 2 numbers to 150 and then subtracting with 125*4 , ans comes to 56, so only D is closest to that.
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another way to solve
in order to minimize one no we have to maximize all the other no.s to get the same average , the max. no. is 150 so the maximum limit of other no.s is 149 & 148
NOW (148 +149+150 +X)/4 = 125 so x=53 ans option D



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