Mathematics MCQS online test preparation Quiz Games by Mcqs Pro World

1.What are Prime Numbers?

1.Which can be divided by Number 1 & by itself Number
2.Which can be divided by Odd Numbers
3.Which can be divided by any Number
4.Which can be divided by Even Numbers

2.What is the average of the first five prime numbers over 20?

1.31.00
2.31.01
3.32.2
4.32.00

3.The average of the nine observations was 9, the first five observations were 10, and the latter five were 8, respectively. What was the 5th observation?

1.8
2.9
3.11
4.10

4.The average of 1st 3 of 4 numbers is 16 and of the last 3 are 15.if the first and last numbers add up to 13, then.. What is the last numbers?

1.5
2.4
3.8
4.None of these

5.Three boys, whose ages are in the ratio 3:5:7, have an average age of 15 years. What is the youngest boy's age, in years?

1.9
2.15
3.21
4.None of these

6.The average of first 10 odd numbers is_____________?

1.8
2.11
3.10
4.9

7.The average of first 10 natural numbers is____________?

1.6.5
2.7.5
3.5.5
4.8.5

8.What is the average of the first ten odd prime numbers?

1.15.8>
2.13.8
3.12.9
4.None of these

9.The average of 11 numbers is 10.9. The sixth number is ____________ if the average of the first six is 10.5 and the average of the last six is 11.4?

1.11.3
2.11.4
3.11.5
4.11.0

10.The average of first 10 even numbers is___________?

1.10
2.15
3.11
4.12