The average of 750,1000,1250 is MCQ with Answer and Explanation

The average of 750,1000,1250 is

A. 990

B. 995

C. 1010

D. 1000

Answer: Option D

3000/3=1000.

This question belongs to: Maths Average

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Question #1 Report Error

The average of 810,1080,1350 is

A. 1080

B. 1070

C. 1090

D. 1075

Correct Answer: Option A

Explanation:
3240/3=1080.

This question belongs to: Maths Average

Question #2 Report Error

If average of x and 1/x is 5/2, x is

A. 4

B. 2 or 0.5

C. 1

D. 5

Correct Answer: Option B

Explanation:
(x +1/x)/2 =2.5. x +1/x=5. x^2 -5x +1=0. x= [5±sqrt21]/2 but options for simple 2: (2+0.5)/2=1.25 no. Use valid.

This question belongs to: Maths Average

Question #3 Report Error

The average of first 15 multiples of 3 is

A. 25

B. 27

C. 22.5

D. 24

Correct Answer: Option D

Explanation:
3*(1+15)/2 =3*8=24.

This question belongs to: Maths Average