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.
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)
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.
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.
Guru said:
9 years ago
Good explanation thanks to all.
Revathi said:
9 years ago
What is prime number? I can't Understand, Please explain it.
Rajaarasu said:
9 years ago
Excellent explanation thanks to all.
Jagadees said:
9 years ago
Is there any shortcut formulas, incase of any higher digit number as it is a two digit number?
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.
Amol said:
10 years ago
33/3 = 11.
81/9 = 9.
93/3 = 31.
But 97/? not have perfect division number.
97/97 = 1.
81/9 = 9.
93/3 = 31.
But 97/? not have perfect division number.
97/97 = 1.
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?
(I know 33 is not a prime but) the formla is not appicable at all the time. So is it a wrong formula?
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