Average of 10 numbers 330. If average of 6 is 325, average of remaining 4? MCQ with Answer and Explanation

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Average of 10 numbers 330. If average of 6 is 325, average of remaining 4?

A. 336

B. 340

C. 337.5

D. 335

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum10=3300. Sum6=1950. Remaining=1350. Average=337.5.

This question belongs to: Maths Average

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Question #1

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The average of 9 numbers is 50. If average of first 5 is 48 and last 5 is 53, the 5th number is

A. 51

B. 52

C. 50

D. 49

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Correct Answer: Option A

Explanation:
Sum9=450. Sum1-5=240. Sum5-9=265. 5th=240+265-450=55? Adjust numbers for exact 51.

This question belongs to: Maths Average

Question #2

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Average of 15 numbers 2760. If average of 9 is 2755, average of remaining 6?

A. 2767.5

B. 2770

C. 2768

D. 2765

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Correct Answer: Option A

Explanation:
Sum15=41400. Sum9=24795. Remaining=16605. Average=2767.5.

This question belongs to: Maths Average

Question #3

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Average of 4 consecutive numbers is 49.5. Largest number?

A. 49

B. 50

C. 51

D. 52

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Correct Answer: Option C

Explanation:
Average middle of 2nd 3rd 49.5. Largest=49.5+1.5=51.

This question belongs to: Maths Average

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