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#### Mathematics Solved MCQs Online Quiz Test

Q.1: Find the area of trapezium whose parallel sides are 20 cm and 18 cm long, and the distance between them is 15 cm.

- 225 cm2
- 275 cm2
- 285 cm2
- 315 cm2

C

Q.2: The perimeter of a triangle is 28 cm and the inradius of the triangle is 2.5 cm. What is the area of the triangle?

- 25 cm2
- 42 cm2
- 49 cm2
- None of these

D

Q.3: If the sides of a triangle are 26 cm, 24 cm and 10 cm, what is its area?

- 120 cm2
- 130 cm2
- 312 cm2
- 315 cm2

A

Q.4: What is the are of an equilateral triangle of side 16 cm?

- 48√3 cm2
- 128√3 cm2
- 9.6√3 cm2
- 64√3 cm2

D

Q.5: If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is———-?

- 44.45
- 53.33
- 54.68
- 55
- None of these

C

Q.6: The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg. Find the average weights of all the boys in the class.

- 47.55 kg
- 48 kg
- 48.55 kg
- 49.25 kg

C

Q.7: 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.8: The average of 18 observations was calculated and it was 124. Later on it was discovered that two observations 46 and 82 were incorrect. The correct values are 64 and 28. The correct average of 18 observations is———–?

- 123
- 137
- 121
- 122

D

Q.9: A person travels from x to y at a speed of 40Km/h and returns by increasing his speed 50%. What is his average speed for both the trips?

- 36km/h
- 45km/h
- 48km/h
- 50km/h

C

Q.10: The mean marks of 30 students in a class is 58.5. Later on it was found that 75 was wrongly recorded as 57. Find the correct them.

- 57.4
- 57.5
- 58.9
- 59.1

D