Aptitude - Numbers - Discussion

Discussion Forum : Numbers - General Questions (Q.No. 9)
9.
Which of the following is a prime number ?
33
81
93
97
Answer: Option
Explanation:
Clearly, 97 is a prime number.
Discussion:
47 comments Page 5 of 5.

Raje said:   10 years ago
6*6 > 33?

(I know 33 is not a prime but) the formla is not appicable at all the time. So is it a wrong formula?

Amol said:   10 years ago
33/3 = 11.
81/9 = 9.
93/3 = 31.

But 97/? not have perfect division number.

97/97 = 1.

Venket said:   9 years ago
How to find the number of divisors, their sum and also the sum of odd and even divisors? Please help me.

Jagadees said:   9 years ago
Is there any shortcut formulas, incase of any higher digit number as it is a two digit number?

Rajaarasu said:   9 years ago
Excellent explanation thanks to all.

Revathi said:   9 years ago
What is prime number? I can't Understand, Please explain it.

Jagadeesh said:   1 decade ago
Please explain, how 97 is prime number ?.


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