Average of 10 numbers 2230. If average of 6 is 2225, average of remaining 4? MCQ with Answer and Explanation

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Average of 10 numbers 2230. If average of 6 is 2225, average of remaining 4?

A. 2236

B. 2240

C. 2237.5

D. 2235

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum10=22300. Sum6=13350. Remaining=8950. Average=2237.5.

This question belongs to: Maths Average

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Question #1

Average of 1 to 20 is

A. 10.5

B. 9.5

C. 10

D. 11

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Correct Answer: Option A

Explanation:
(20×21)/2 /20 =10.5.

This question belongs to: Maths Average

Question #2

Average of 10 numbers 2730. If average of 6 is 2725, average of remaining 4?

A. 2736

B. 2735

C. 2740

D. 2737.5

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Correct Answer: Option D

Explanation:
Sum10=27300. Sum6=16350. Remaining=10950. Average=2737.5.

This question belongs to: Maths Average

Question #3

Average of 1^3 +2^3 +...+5^3 is

A. 225

B. 45

C. 50

D. 55

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Correct Answer: Option B

Explanation:
Sum cubes =(5*6/2)^2=225. Average=225/5=45.

This question belongs to: Maths Average

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