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Of the given FOUR sets of five numbers each, find the ODD ONE out.
1 , 2 , 19 , 23 , 11
841 , 169 , 9 , 361 , 4
23 , 29 , 7 , 5 , 27
1 , 121 , 169 , 289 , 25
The first series is a set of prime numbers, second and fourth are squares of prime numbers, hence third series is the odd one.
=> Ans - (C)
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