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:
107 comments Page 10 of 11.

Komal gupta said:   8 years ago
@Karthick.

I have not understood your process please explain me with the other examples.

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

Deekshi said:   8 years ago
Code for prime numbers below 100 is 442233322321.

2,3,5,7 (4)
11,13,17,19 (4)
23,29 (2)
31,37 (2)
41,43,47 (3)
53,59 (2)
61,67 (20
71,73,79 (3)
83,89 (2)
97 (1)

V ramesh said:   7 years ago
Prime number is nothing but it is divisible by one and itself that type of numbers called prime numbers.

Darshan said:   7 years ago
Thanks @Nidhin.

Annapurna said:   7 years ago
Thank you @Santosh.

Sharmi said:   7 years ago
Thank you @Dilipkumar.

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

Nithish said:   6 years ago
Prime number is nothing but a number divisible only by one and that number. But 91 is divisible by Seven. So it's not a prime number.

Sanket said:   6 years ago
Thanks all.


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