arithmetic Archives - MCQ and Quiz for Exams

1. In the number series given below, which one of the following options will appear at the place marked (?) ? 14, 8, 5, ? , 2.75

3.5

3.25

3

2.95

Detailed SolutionIn the number series given below, which one of the following options will appear at the place marked (?) ? 14, 8, 5, ? , 2.75

2. If the average of five numbers in 10, the number, which should be added to make the average 12 is

12

18

22

24

Detailed SolutionIf the average of five numbers in 10, the number, which should be added to make the average 12 is

3. 4.The arithmetic mean of certain observations is 35 If each number is increased by 5, what will be the arithmetic mean ?

32

40

43

60

Detailed Solution4.The arithmetic mean of certain observations is 35 If each number is increased by 5, what will be the arithmetic mean ?

4. What is the sum of numbers 2?, 3? and 4? ?

9

3

0

2

Detailed SolutionWhat is the sum of numbers 2?, 3? and 4? ?

5. The second number in a series is twice the first number and three times the third number . Arithmetic mean of these three numbers is The largest number will be

72

66

60

54

Detailed SolutionThe second number in a series is twice the first number and three times the third number . Arithmetic mean of these three numbers is The largest number will be

6. A student was asked to divide the half of a certain number by 6 and the other half by 4 and then to add the two quantities so obtained. Instead of doing so the student divided the number by 5 and the result fell short by The given number was

240

288

384

480

Detailed SolutionA student was asked to divide the half of a certain number by 6 and the other half by 4 and then to add the two quantities so obtained. Instead of doing so the student divided the number by 5 and the result fell short by The given number was

7. An aeroplane flies from place A to place B at the speed of 500 kms/hour. On the return journey, its speed is 700 kms per hour. The average speed of the aeroplane for the entire journey is

566-kms/hour

583- kms/hour

600kms/hour

583- kms/hour

Detailed SolutionAn aeroplane flies from place A to place B at the speed of 500 kms/hour. On the return journey, its speed is 700 kms per hour. The average speed of the aeroplane for the entire journey is

8. A sum of Rs. 6,240 is paid off in 30 installments in such a way that each installment is Rs. 10 more than the previous installment. The first installment would be of

Rs. 36

Rs.63

Rs. 37

Rs.73

Detailed SolutionA sum of Rs. 6,240 is paid off in 30 installments in such a way that each installment is Rs. 10 more than the previous installment. The first installment would be of

9. The arithmetic mean of 15 numbers is 41.Then the sum of these numbers is

414

420

620

621

Detailed SolutionThe arithmetic mean of 15 numbers is 41.Then the sum of these numbers is

10. If H. C. F. of two numbers is 8, then which one of the following numbers cannot be L. C. M. of those numbers?

24

48

56

60

Detailed SolutionIf H. C. F. of two numbers is 8, then which one of the following numbers cannot be L. C. M. of those numbers?

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