Q.1) The average of the first ten odd numbers is

(a) 11

(b) 10

(c) 17

(d) 9

Q.2) The average weight of a class of 30 students is 40 kg. If, however, the weight of the teacher is included, the average becomes 41 kg. The weight of the teacher is

(a) 31 kg

(b) 62 kg

(c) 71 kg

(d) 70 kg

Q.3) Ram bought 2 toys for ₹ 5.50 each, 3 toys for ₹3.66 each and 6 toys for ₹ 1.833 each. The average price per toy is

(a)₹3

(b)₹10

(c) ₹ 5

(d) ₹ 9

Q.4) 30 oranges and 75 apples were purchased for ₹ 510. If the price per apple was ₹ 2, then the average price of oranges was

(a)₹12

(b)₹ 14

(c) ₹ 10

(d)₹ 15

Q.5) The average income of Sambhu and Ganesh is ₹ 3,000 and that of Arun and Vinay is ₹ 500. What is the average income of Sambhu, Ganesh, Arun and Vinay?

(a)₹1750

(b) ₹1850

(c)₹ 1000

(d)₹ 2500

Q.6) A batsman made an average of 40 runs in 4 innings, but in the fifth inning, he was out on zero. What is the average after fifth inning?

(a) 32

(b) 22

(c) 38

(d) 49

Q.7) The average weight of 40 teachers of a school is 80 kg. If, however, the weight of the principal be included, the average decreases by 1 kg. What is the weight of the principal?

(a) 109 kg

(b) 29 kg

(c) 39 kg

(d) None of these

Q.8) The average temperature of 1st, 2nd and 3rd December was 24.4 °C. The average temperature of the first two days was 24 °C. The temperature on the 3rd of December was

(a) 20 °C

(b) 25 °C

(c) 25.2 °C

(d) None of these

Q.9) The average age of Ram and Shyam is 20 years. Their average age 5 years hence will be

(a) 25 years

(b) 22 years

(c) 21 years

(d) 20 years

Q.10) The average of 20 results is 30 and that of 30 more results is 20. For all the results taken together, the average is

(a) 25

(b) 50

(c) 12

(d) 24