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:
107 comments Page 5 of 11.
Gomathi said:
1 decade ago
Thank you santhosh. And explain with one or more examples please.
Saheb ali said:
1 decade ago
@Raji thanks.
Kishore sulthana said:
1 decade ago
Thank you dilipkumar
Eswar said:
1 decade ago
Can we use this shortcut for 3 and 4 digits?
Puneet said:
1 decade ago
@Dilipkumar(Cse).
That is an awesome way to remember all prime numbers between 1 & 100. There is a pattern too.
That is an awesome way to remember all prime numbers between 1 & 100. There is a pattern too.
Raja said:
1 decade ago
@Santhosh @Raji thanks for help.
But it only possible for some hundreds.
When we find 9999 is prime no or not,
It takes lot of time.
n*n>= p.
n*n>= 9999.
Where n must be 100.
So there are many prime no below 100.
To divided by no.
So it is not possible for all no.
Please post another method if you knew.
But it only possible for some hundreds.
When we find 9999 is prime no or not,
It takes lot of time.
n*n>= p.
n*n>= 9999.
Where n must be 100.
So there are many prime no below 100.
To divided by no.
So it is not possible for all no.
Please post another method if you knew.
Konga said:
1 decade ago
It is not possible for all numbers.
Jeevitha said:
1 decade ago
Please give me detailed explanation about prime number.
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".
Kimaya said:
1 decade ago
The simple way is we should know tables to find which is a prime number.
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