Select the number from the given options, which has a characteristic common with the following numbers.

29, 43, 59, 53, 89

This question was previously asked in
NTPC CBT-I (Held On: 18 Jan 2021 Shift 1)
View all RRB NTPC Papers >
  1. 96
  2. 79
  3. 87
  4. 81

Answer (Detailed Solution Below)

Option 2 : 79
Free
RRB NTPC CBT-I Official Paper (Held On: 4 Jan 2021 Shift 1)
100 Qs. 100 Marks 90 Mins

Detailed Solution

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The logic followed here is-

  • 29, 43, 59, 53, 89- All the given numbers are prime numbers.

Thus,

1. 96- Not a prime number

2. 79- Prime Number

3. 87- Not a prime number

4. 81- Not a prime number

Hence, 'option 2' is the correct answer.

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