Aptitude - Numbers - Discussion

Discussion Forum : Numbers - General Questions (Q.No. 1)
1.
Which one of the following is not a prime number?
31
61
71
91
Answer: Option
Explanation:
91 is divisible by 7. So, it is not a prime number.
Discussion:
108 comments Page 7 of 11.

Kishor said:   1 decade ago
Prime number means, the number which is non actionable.

Akshay said:   9 years ago
Please, someone, know the method for divisibility of 6?

Santhosh said:   1 decade ago
How you will consider 7 when you are checking for 31?

Santosh(pydah) said:   1 decade ago
91 is divided by 7 thats why it is not prime number.

Nishu said:   3 years ago
@All.

Thank You so much, it was very helpful to me.
(9)

Prabhakar gupta said:   8 years ago
91is not a prime no. Because it is divisible by 13.

Kranthi kumar said:   7 years ago
Please give me the clear explanation of the answer.

Shivani said:   9 years ago
Please give brief explanation of prime numbers.

Pooja.r.m said:   9 years ago
Thank you @Nidhin. Now I understand it easily.

Vengala rao said:   1 decade ago
Hai, santhosh your explanation is very nice.


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