Question: The average of 9 observations was 9, that of the 1st of 5 being 10 and that of the last 5 being 8. What was the 5th observation?

• 1. 9
• 2. 8
• 3. 7
• 4. 6

Question: The average of 1st 3 of 4 numbers is 16 and of the last 3 are 15. If the sum of the first and the last number is 13. What is the last numbers?

• 1. 8
• 2. 6
• 3. 5
• 4. 2

Question: The average age of three boys is 15 years and their ages are in proportion 3:5:7. What is the age in years of the youngest boy?

• 1. 15
• 2. 9
• 3. 18
• 4. 21

Question: The average of first 10 odd numbers is_____________?

• 1. 11
• 2. 10
• 3. 12
• 4. 17

Question: The average of first 10 natural numbers is____________?

• 1. 5
• 2. 5.5
• 3. 6.5
• 4. 6

Question: The average of first ten prime numbers which are odd is____________?

• 1. 12.9
• 2. 13.8
• 3. 15.8
• 4. 17

Question: The average of 11 numbers is 10.9. If the average of first six is 10.5 and that of the last six is 11.4 the sixth number is_____________?

• 1. 11.0
• 2. 11.3
• 3. 11.4
• 4. 11.5

Question: The average of first 10 even numbers is___________?

• 1. 18
• 2. 22
• 3. 9
• 4. 11

Question: A man spend Rs. 3300. This was 75% of his monthly income. His monthly income is__________?

• 1. 4000
• 2. 4400
• 3. 5000
• 4. 5400

Question: What are Prime Numbers?

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