Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 12)
12.
The sum of first five prime numbers is:
Answer: Option
Explanation:
Required sum = (2 + 3 + 5 + 7 + 11) = 28.
Note: 1 is not a prime number.
Definition: A prime number (or a prime) is a natural number that has exactly two distinct natural number divisors: 1 and itself.
Discussion:
29 comments Page 2 of 3.
Babu said:
8 years ago
Why 1 is not a prime number? It also divided by 1 and itself. It's my doubt please clear it.
Sakib said:
6 years ago
@Megnah, this formula doesn't apply for the first five numbers.
n(n+1)/2=15.
n(n+1)/2=15.
(3)
Kirankumar said:
1 decade ago
The number which has only two factors like 1 and itself known as prime number.
Shakeer said:
1 decade ago
A number having only two factors such as 1 and itself is called prime number.
Abhishek said:
1 decade ago
Anyone know the formula for finding the sum of consecutive prime numbers?
(1)
Lucky said:
9 years ago
Formula for finding the sum of first n natural numbers? Please tell me.
Subbu said:
1 decade ago
Is there any formula to find sum of first 100 or large prime numbers?
Sowmya said:
1 decade ago
Can you give general method to find first n prime numbers.
Azhar said:
2 decades ago
Prime number is start from 2.
2 + 3 + 5 + 7 + 11 = 28.
2 + 3 + 5 + 7 + 11 = 28.
Ashok Kumar said:
1 decade ago
Prime number is start from 2.
2 + 3 + 5 + 7 + 11 = 28.
2 + 3 + 5 + 7 + 11 = 28.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers