Average of 15,30,45,60 is MCQ with Answer and Explanation

Question
Average of 15,30,45,60 is
A. 38
B. 35
C. 37.5
D. 40
Answer: Option C
Solution (By JKSSB Mock Tests)
Sum=150. Average=37.5.
This question belongs to: Maths Average
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Question #1
Average of 255,340,425 is
A. 330
B. 350
C. 340
D. 335
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Correct Answer: Option C

Explanation:
1020/3=340.
This question belongs to: Maths Average
Question #2
What is average of all two digit numbers?
A. 50
B. 54.5
C. 45
D. 55
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Correct Answer: Option B

Explanation:
From 10 to 99, 90 numbers. Average (10+99)/2=54.5.
This question belongs to: Maths Average
Question #3
The average of 10 numbers is 21. If one number is 30, find the average of the remaining 9.
A. 20
B. 19.5
C. 19
D. 20.5
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Correct Answer: Option A

Explanation:
Sum=10×21=210. Remaining sum=210-30=180. Avg=180/9=20.
This question belongs to: Maths Average
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