Pick the odd one out:

43, 38, 58, 64, 89

  1. 58
  2. 64
  3. 43
  4. 38

Answer (Detailed Solution Below)

Option 2 : 64
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Detailed Solution

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Here, the pattern followed is,

43 → 4 + 3 = 7 (prime number)

38 → 3 + 8 = 11 (prime number)

58 → 5 + 8 = 13( prime number)

64 6 + 4 = 10 (non-prime number)

89 → 8 + 9 = 17 (prime number)

As, the sum of all digits is equal to a prime number except 64.

Hence, ‘64’ is the correct answer. 

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