Average of 1 to 20 except 10 is MCQ with Answer and Explanation

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Average of 1 to 20 except 10 is

A. 11

B. 10

C. 10.5

D. 9.5

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum=210-10=200. Numbers19. Average≈10.53.

This question belongs to: Maths Average

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Question #1

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The average age of 6 students is 12 years. If the teacher's age is included, the average becomes 15 years. What is the teacher's age?

A. 30

B. 27

C. 36

D. 33

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Correct Answer: Option D

Explanation:
Sum of 6 students' ages = 6×12=72. Sum of 7 persons = 7×15=105. Teacher's age = 105-72=33.

This question belongs to: Maths Average

Question #2

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Average of 975,1300,1625 is

A. 1290

B. 1300

C. 1310

D. 1295

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Correct Answer: Option B

Explanation:
3900/3=1300.

This question belongs to: Maths Average

Question #3

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The average of 3 numbers is 15. If each number is multiplied by 4, what is the new average?

A. 45

B. 60

C. 75

D. 30

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Correct Answer: Option B

Explanation:
New average =15×4=60.

This question belongs to: Maths Average

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