If average of 8 and 12 is 10, average of 12 and 18 is 15, average of 8,12,18 is MCQ with Answer and Explanation

If average of 8 and 12 is 10, average of 12 and 18 is 15, average of 8,12,18 is

A. 12

B. 14

C. 13

D. 12.67

Answer: Option D

Sum=38. Average=38/3≈12.67.

This question belongs to: Maths Average

No comments yet. Be the first to start the discussion!

Question #1 Report Error

Find the average of the first 7 natural numbers which are multiples of 2.

A. 8.5

B. 7

C. 8

D. 9

Correct Answer: Option C

Explanation:
Multiples: 2,4,6,8,10,12,14 sum=56, count=7, avg=8.

This question belongs to: Maths Average

Question #2 Report Error

The average of 7 consecutive numbers is 33. What is the sum of the numbers?

A. 210

B. 231

C. 220

D. 240

Correct Answer: Option B

Explanation:
Sum = average × numbers = 33 × 7 = 231.

This question belongs to: Maths Average

Question #3 Report Error

The average of 510,680,850 is

A. 670

B. 675

C. 680

D. 690

Correct Answer: Option C

Explanation:
2040/3=680.

This question belongs to: Maths Average