Average
- The average of 8, 9, 12, 13, 15, 9 is
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Average = (8 + 9 + 12 + 13 + 15 + 9)/6
Correct Option: A
Average = (8 + 9 + 12 + 13 + 15 + 9)/6
= 66 / 6
= 11
- A has 8 pencils, B has 10 pencils and C has 15 pencils, then the average number of pencils with them are
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Average number of pencils
= ( 8 + 10 + 15 ) / 3Correct Option: D
Average number of pencils
= ( 8 + 10 + 15 ) / 3
=11
- The average age of 7 member of Patel's family is 25 year. The average age of the same family 3 year ago was
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3 year ago average of family = Present average age of family -3
Correct Option: B
Present average age of family
= 25 year
3 year ago average of family
= 25 - 3 = 22 years
- The average of 6 number 13, 17, 25, 11, 26, 10 is
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Average = sum of 6 numbers / 6
Correct Option: B
Average = sum of 6 numbers / 6
= ( 13 + 17 + 25 + 11 + 26 + 10 ) / 6
= 102 / 6
= 17
- The salary of A, B, C, D, E is Rs. 8000, Rs. 5000, Rs. 11000, Rs. 7000, Rs. 9000 per month respectively, then the average salary of A, B, C, D, and E per month is
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Average salary
= 8000 + 5000 + 11000 + 7000 + 9000 / 5Correct Option: B
Average salary
= 8000 + 5000 + 11000 + 7000 + 9000 / 5
= Rs. 8000