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Find the odd one out.
41,43,47,53,61,71,73,81

43
61
81
41
Explanation:

In the above series all elements except 81 are prime numbers.so 81 is odd one.
Additional Questions

Find the odd one out.
3,5,7,12,17,19

Answer

Find the odd one out.
1,4,9,16,23,25,36

Answer

Find the odd one out.
8,27,64,100,125,216,343

Answer

3, 5, 11, 14, 17, 21

Answer

8, 27, 64, 100, 125, 216, 343

Answer

10, 25, 45, 54, 60, 75, 80

Answer

1, 4, 9, 16, 23, 25, 36

Answer

1, 4, 9, 16, 20, 36, 49

Answer

10, 14, 16, 18, 21, 24, 26

Answer

16, 25, 36, 72, 144, 196, 225

Answer
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