What is average of all two digit numbers? MCQ with Answer and Explanation

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What is average of all two digit numbers?

A. 54.5

B. 55

C. 45

D. 50

Answer: Option A

Solution (By JKExamLibrary)

From 10 to 99, 90 numbers. Average (10+99)/2=54.5.

This question belongs to: Maths Average

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Practice More Average Questions

Question #1 Report Error

The average monthly income of a person for 12 months is ₹30,000. If he earned ₹36,000 in one month, the average income for the remaining 11 months is:

A. ₹29,454.55

B. ₹29,000

C. ₹31,000

D. ₹30,000

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Correct Answer: Option A

Explanation:
Total income = 12×30000 = 360000. Remaining income = 360000−36000 = 324000. Average = 324000/11 = 29454.55.

This question belongs to: Maths Average

Question #2 Report Error

Average of 9 numbers 2290. If average of 6 is 2285, average of remaining 3?

A. 2298

B. 2305

C. 2300

D. 2295

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Correct Answer: Option C

Explanation:
Sum9=20610. Sum6=13710. Remaining=6900. Average=2300.

This question belongs to: Maths Average

Question #3 Report Error

The average of 33,44,55 is

A. 45

B. 46

C. 42

D. 44

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Correct Answer: Option D

Explanation:
Sum=132. Average=44.

This question belongs to: Maths Average

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