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 2 of 5.

Mubarak dme said:   1 decade ago
This is divisible by 1 and at the same time it also divisible by same number this is called prime number.

Madan said:   9 years ago
3 * 11 = 33,
3 * 3 * 9 = 81,
3 * 31 = 93,
But 97/3 = It's not whole number. So 97 is the correct answer.

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.

Sravani said:   9 years ago
How to identify the prime numbers easily?

Please tell me I'm very confused anyone please tell me.

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

Deekshi said:   8 years ago
Prime Number means having only 2 factors those are 1 and it self. So 97 is a prime number.

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

But 97/? not have perfect division number.

97/97 = 1.

Viki said:   1 decade ago
Because 97 is not divided by 3. Other numbers are divided by 3 so the answer is 97.

Rishi said:   4 years ago
97 is the answer because we can't divide this number with any prime number.
(3)

Deepi said:   1 decade ago
I accept niranjan nandu explanation 97 is a prime number its very clear.


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