Average of 25 consecutive numbers is 50. What is the smallest? MCQ with Answer and Explanation

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Average of 25 consecutive numbers is 50. What is the smallest?

A. 40

B. 37

C. 38

D. 39

Answer: Option C

Solution (By JKSSB Mock Tests)

Middle 13th =50. Smallest=50 -12=38.

This question belongs to: Maths Average

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Question #1

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

Question #2

The average age of a family of 5 members is 30 years. The youngest member is 5 years old. What is the average age of the remaining 4 members?

A. 37.5

B. 35

C. 34

D. 36.25

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Correct Answer: Option D

Explanation:
Sum of ages = 5×30=150. Sum of remaining 4 =150-5=145. Average =145/4=36.25.

This question belongs to: Maths Average

Question #3

The average of 240,320,400 is

A. 315

B. 320

C. 330

D. 310

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Correct Answer: Option B

Explanation:
960/3=320.

This question belongs to: Maths Average

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