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#### Mathematics Solved MCQs Online Quiz Test

Q.1: The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is———–?

- 17 kg
- 20 kg
- 26 kg
- 31 kg

D

Q.2: The average age of 15 students of a class is 15 years. Out of these, the average age of 5 students is 14 years and that of the other 9 students is 16 years. The age of the 15th student is————?

- 11 years
- 14 years
- 15 years
- 15 2/7 years

A

Q.3: A pupil’s marks were wrongly entered as 83 instead of 63. Due to the average marks for the class got increased by half. The number of pupils in the class is———–?

- 10
- 20
- 40
- 73

C

Q.4: The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is———–?

- 35.2
- 36.1
- 36.5
- 39.1

C

Q.5: If the arithmetic mean of seventy five numbers is calculated, it is 35. If each number is increased by 5, then mean of new number is———–?

- 30
- 40
- 70
- 90

B

Q.6: In the first 10 overs of a cricket game, the run rate was only 3.2. What should be the rate in the remaining 40 overs to reach the target of 282 runs?

- 6.25
- 6.5
- 6.75
- 7

A

Q.7: The average of runs of a cricket player of 10 innings was 32. How many runs must he make in his next innings so as to increase his average of runs by 4?

- 2
- 4
- 70
- 76

D

Q.8: The average of 35 students in a class is 16 years. The average age of 21 students is 14. What is the average age of remaining 14 students?

- 15 years
- 17 years
- 18 years
- 19 years

D

Q.9: The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is———-?

- 25
- 27
- 30
- 35

D

Q.10: A library has an average of 510 visitors on Sunday and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is———–?

- 250
- 276
- 280
- 285

D