1. Find the average of the following set of numbers: 354, 281, 623, 518, 447, 702, 876.

• 543
• 518
• 447
• 502

2. The body weight of six boys is 54 kg, 64 kg, 75 kg, 67 kg, 45 kg and 91 kg. What is the average body weight?

• 65 kg
• 69 kg
• 66 kg
• 68 kg

3. There are six numbers 30, 72, 53, 68, x and 87. The average is 60. Find x.

• 58
• 50
• 60
• 62

4. Find the average of all prime numbers between 30 and 50.

• 33
• 37.5
• 43.8
• 39.8

5. Find the average of first 40 natural numbers.

• 20
• 21
• 20.5
• 21.5

6. Find the average of first 20 multiples of 7.

• 70
• 73.5
• 75
• 72.5

7. A man bought 5 shirts at ₹450 each, 4 trousers at ₹750 each and 12 pairs of shoes at ₹750 each. What is the average expenditure per article?

• 678.57
• 728.52
• 688.92
• 750

8. 13 chairs and 5 tables were bought for ₹8280. If the average cost of a table is ₹1227, find the average cost of a chair.

• ₹172
• ₹165
• ₹185
• ₹150

9. The average of five consecutive numbers is 48. What is the product of the first and last number?

• 2435
• 2345
• 2356
• 2300

10. The average monthly expenditure was ₹2200 (3 months), ₹2250 (4 months) and ₹3120 (5 months). If yearly savings were ₹1260, find the average monthly income.

• ₹2750
• ₹2705
• ₹2650
• ₹2550