Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 1)
1.
Which one of the following is not a prime number?
Answer: Option
Explanation:
91 is divisible by 7. So, it is not a prime number.
Discussion:
105 comments Page 1 of 11.
Ajeejul said:
3 weeks ago
91 is the correct answer.
(1)
Keshav said:
4 months ago
How to find the prime number?
(16)
Amare muluken said:
1 year ago
Thanks all for explaining the answer.
(8)
Kakrla mallikarjuna rao said:
1 year ago
I think B is the correct answer.
(7)
Vishala said:
2 years ago
Thank you all for explaining the answer.
(17)
Nishu said:
2 years ago
@All.
Thank You so much, it was very helpful to me.
Thank You so much, it was very helpful to me.
(7)
Jaanu Jaanu said:
2 years ago
Thanks both of you for the clear explanations. @Hafiz and@ Dilip.
(7)
Monisha Mohanan said:
3 years ago
@All.
Prime number means that a number that is divisible only by itself and 1
Examples : 2,3,5,7,11.
Now in our question the options s 31, 61,71 and 91 here I think in our example we can find that the prime numbers only start with 2,1,3,5,7.
Thus the answer becomes 91.
Prime number means that a number that is divisible only by itself and 1
Examples : 2,3,5,7,11.
Now in our question the options s 31, 61,71 and 91 here I think in our example we can find that the prime numbers only start with 2,1,3,5,7.
Thus the answer becomes 91.
(44)
Jitu said:
3 years ago
Why only 91 is not a prime number?
In this case, 71 is also divisible by 3.
In this case, 71 is also divisible by 3.
(9)
Sharma said:
3 years ago
91 prime or not.
Which square number is exceeds 91?
10 ^2 right. So let's take a prime number which is less than 10.
2, 3, 5, 7.
Check the given number is divisible by 2, 3, 5, 7.
If it is divisible then it is not a prime number.
If not that would be a prime number.
Which square number is exceeds 91?
10 ^2 right. So let's take a prime number which is less than 10.
2, 3, 5, 7.
Check the given number is divisible by 2, 3, 5, 7.
If it is divisible then it is not a prime number.
If not that would be a prime number.
(28)
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers