Prime Number Quiz

Q. Which of the following number is not a prime number ?

1. 33
2. 29
3. 19
4. 23

Answer: Option 1 : 33

Q. 1213 and 1231 are two numbers.

1. First number is prime and the second is composite.
2. First number is composite and the second is prime.
3. Both the numbers are composite.
4. Both the numbers are prime.

Answer: Option 4 : Both the numbers are prime.

Q. Sum of all the prime numbers between 70 and 100 is : 

1. 492 
2. 385 
3. 421 
4. 419

Answer: Option 1 : 492 

Q. How many Prime Numbers lie between 1 to 30 ?

1. 8
2. 9
3. 10
4. 11

Answer: Option 3 : 10

Q. Consider the following statements:

(I) All prime numbers are odd numbers.

(Il) There are only five single digit prime numbers.

(Ill) There are infinitely many prime numbers.

(IV) A prime number has only two factors.

Which of the above statements are true?

1. (I) and (IV)
2. (II), (III) and (IV)
3. (III) and (IV)
4. (II) and (IV)

Answer: Option 3 : (III) and (IV)

Q. Statement A : 1 is not a prime number

Statement B : 1 is not a composite number

Which of the above statements is/are true?

1. Both A & B are true
2. Both A & B are not true
3. A is true, B is not true
4. A is not true, B is true

Answer: Option 1 : Both A & B are true

Q. The sum of all those prime numbers which are less than 31 is

1. 129
2. 139
3.  132
4. 137

Answer: Option 1 : 129

Q. Which is not a prime number?

1. 101
2. 103
3. 137
4. 141

Answer: Option 4 : 141

Q. Which of the following group of number has least prime numbers?

1. From 20 to 40
2. From 30 to 50
3. From 40 to 60
4. From 60 to 80

Answer: Option 1 : From 20 to 40

Q. Next term in the series 4, 9, 25, 49, …

1. 81
2. 144
3. 100
4. 121

Answer: Option 4 : 121

Q. The sum of squares of distinct common prime factors of 120, 210 and 330 is

1. 34
2. 38
3. 39
4. 46

Answer: Option 2 : 38

Q. Which of the following statements is correct?

1. 1 is a prime number
2. 1 is a composite number
3. 1 is both a prime and a composite number.
4. 1 is neither prime nor a composite number.

Answer: Option 4 : 1 is neither prime nor a composite number.

Q. The number whose only factors are 1 and the number itself is called a/an ________ number.

1. prime
2. composite
3. odd
4. Even

Answer: Option 1 : prime