Aptitude - Numbers - Discussion

Discussion Forum : Numbers - General Questions (Q.No. 1)
1.
Which one of the following is not a prime number?
31
61
71
91
Answer: Option
Explanation:
91 is divisible by 7. So, it is not a prime number.
Discussion:
108 comments Page 4 of 11.

Mahaboob basha said:   10 years ago
Hi friends I have a doubt please clear it.

What is the remainder when 1!+2!+3!+4!+5!+....+50! is divided by 5!?

Ravindra said:   1 decade ago
Simple meaning of prime no-"The number which is only divisible by itself and by 1, is called a prime number".

Kavitha said:   1 decade ago
Please, give me detailed explanation about the prime number and solve the steps one by one in the problem.

V ramesh said:   7 years ago
Prime number is nothing but it is divisible by one and itself that type of numbers called prime numbers.

Komal gupta said:   8 years ago
@Karthick.

I have not understood your process please explain me with the other examples.

Mahalakshmi said:   10 years ago
What is prime numbers how we have have to do calculation? Please explain me in detail.

Shailendra kumar said:   10 years ago
After 4! all the no is divisible by 5! so answer is (1+2+6+24)/6 = 33/6 = 3 (rem).

Swati said:   9 years ago
@Dilipkumar(Cse).

Is there any method to find the prime number between 1 to 1000?

Pooja said:   5 years ago
n*n>=p in this form, how take that value by comparing p? Please explain anyone.

Shekhar said:   1 decade ago
The number which is only divisible by itself and by 1, is called a prime number.


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