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 4 of 5.

Khin myat kyu said:   1 decade ago
93 is divisible by 3.

Sushma said:   1 decade ago
Is 93 is divisible by any numbers. Please explain?

Poorvi said:   1 decade ago
97. Nearest square = 10*10 > 97.

Check if 97 is divisible by prime numbers less than 10. i.e.., 2, 3, 5, 7.

If it is not divisible the given number is a prime number.

Similarly for other numbers.

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

Vishal kesari said:   1 decade ago
Because 97 is only number which is divided by one and itself.

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.

Lalita said:   1 decade ago
Which is divisible by 1 and itself only is called prime number.

Kannan said:   1 decade ago
What is mean prime number?

Pavan.k said:   1 decade ago
Note # 1 is neither prime nor composite number.

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


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