Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 9)
9.
Which of the following is a prime number ?
Answer: Option
Explanation:
Clearly, 97 is a prime number.
Discussion:
47 comments Page 3 of 5.
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.
Guru said:
9 years ago
Good explanation thanks to all.
Dhiru said:
9 years ago
Find the square root of the number i.e. square root of the 97 is 9 point something Now divide the 97 by each prime less than 9 if it not divisible it will be prime.
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.
3 * 3 * 9 = 81,
3 * 31 = 93,
But 97/3 = It's not whole number. So 97 is the correct answer.
Pravallika said:
9 years ago
To find prime no we have to divide the number with 2, 3 & 7.
Then only is it called as a prime number.
Then only is it called as a prime number.
(1)
Harish said:
9 years ago
I understand now, thanks @Viki.
Sravani said:
9 years ago
How to identify the prime numbers easily?
Please tell me I'm very confused anyone please tell me.
Please tell me I'm very confused anyone please tell me.
Sravani said:
9 years ago
Is there any shortcut formula to solve this?
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