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 1 of 3.
Ansar said:
2 decades ago
1+2+3+5+7=18
Azhar said:
2 decades ago
Prime number is start from 2.
2 + 3 + 5 + 7 + 11 = 28.
2 + 3 + 5 + 7 + 11 = 28.
Sundar said:
1 decade ago
@Ansar
1 is not a prime number.
A prime number (or a prime) is a natural number that has exactly two distinct natural number divisors: 1 and itself.
The smallest twenty-five prime numbers (all the prime numbers under 100) are:
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.
Hope this will help you. Have a nice day!
1 is not a prime number.
A prime number (or a prime) is a natural number that has exactly two distinct natural number divisors: 1 and itself.
The smallest twenty-five prime numbers (all the prime numbers under 100) are:
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.
Hope this will help you. Have a nice day!
Ashok Kumar said:
1 decade ago
Prime number is start from 2.
2 + 3 + 5 + 7 + 11 = 28.
2 + 3 + 5 + 7 + 11 = 28.
Sowmya said:
1 decade ago
Can you give general method to find first n prime numbers.
Jay vaghela said:
1 decade ago
Pleas tell me anybody how to find prime number.
Kowsalya said:
1 decade ago
To find a prime number :
The number must divide itself only, For example 2,3,5 these numbers only divide the same tables only.
The number must divide itself only, For example 2,3,5 these numbers only divide the same tables only.
Shashank said:
1 decade ago
The method to find a prime no. is 6n-1 or 6n+1 except 2 & 3. . .1 is neither prime nor composite.
Murali said:
1 decade ago
To find a prime number:
the numbers 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97 etc
This total 25 no.s is not divisible by ant other no.
for example:
1. 11 is not divisble my any other no.
2. 17 is not divisble my any other no.
3. 71 is not divisble my any other no. etc etc etc
if the number is not divisible ny any other no. then we called as prime number
the numbers 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97 etc
This total 25 no.s is not divisible by ant other no.
for example:
1. 11 is not divisble my any other no.
2. 17 is not divisble my any other no.
3. 71 is not divisble my any other no. etc etc etc
if the number is not divisible ny any other no. then we called as prime number
Rose said:
1 decade ago
What is prime number. Please explain.
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