Multiple choice

Which of the following is a prime number?

  1. 143

  2. 131

  3. 147

  4. 161
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

[Explanation: 131 has exactly 2 factors, i.e., 1 and 131 Therefore, It is a prime number. 143 is divisible by 11, 147 is divisible by 7 and 161 is divisible by 7]

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