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Q:

What number should replace the question mark?

125, 138, 164, ?, 255

A) 189 B) 197
C) 200 D) 203

Answer:   D) 203



Explanation:

The given number series is 125,   138,   164,   ?,   255

 

125

 

125 + 13x1 = 138

 

138 + 13x2 = 164

 

164 + 13x3 = 203

 

203 + 13x4 = 255

 

 

 

Hence, the missing number in the series is 203.

Subject: Odd Man Out
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Explanation:

The series follows the following pattern.

 

4

 

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37 = 12+62

 

58 = 32+72

 

81 ≠52+82.

 

Here every number is based on the digits of previous number. Hence, 81 is the wrong number in the given series.

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Explanation:

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