Basic Arithmetic MCQs with Answers for mathematics part in one paper jobs test preparation.

## Basic Arithmetic MCQs

**What is the Arithmetic Mean of the following data 3,6,9,12,15.**

A. 7**B. 9**

C. 12

D. 8

Arithmetic Mean Formula = **Sum of all values / Total number of values**.

**Calculate the Average of 1,2,3,4,5.**

A. 1

B. 2**C. 3**

D. 4

**The average of first 10 odd numbers is ____?**

A. 11**B. 10**

C. 12

D. 17

**The average of first 10 natural numbers is _____?**

A. 5**B. 5.5**

C. 6.5

D. 6

**The average of first 10 even numbers is ______?**

A. 18

B. 22

C. 9**D. 11**

**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 ___?**

A. 53.33**B. 54.68**

C. 55

D. None of these

**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**

A. 47.55 kg

B. 48 kg**C. 48.55 kg**

D. 49.25 kg

**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 ___?**

A. 17 kg

B. 20 kg

C. 26 kg**D. 31 kg**

**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 _____?**

A. 123

B. 137

C. 121**D. 122**

**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?**

A. 36km/h

B. 45km/h**C. 48km/h**

D. 50km/h