Mathematics | Maths Mcqs – 7

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Officerswiki is a free education & learning platform for all students and working professionals, where they can practice multiple-choice questions & answers (MCQs). These all MCQs on Officerswiki are FreeMcqs which are helpful in all types of exams such as PPSC, FPSC, CSS, NTS,  PMS, and UPSC. 

The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is__________?

A. 25
B. 27
C. 30
D. 35

A library has an average of 510 visitors on Sunday and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is___________?

A. 250
B. 276
C. 280
D. 285

A family consists of grandparents, parents and three grandchildren. The average age of the grandparents is 67 years, that of the parents is 35 years and that of the grandchildren is 6 years. What is the average age of the family?

A. 28 4/7 years
B. 31 5/7 years
C. 32 1/7 years
D. None of these

The average of five consecutive odd numbers is 61. What is the difference between the highest and lowest numbers?

A. 2
B. 5
C. 8
D. Cannot be determined

The average of non-zero number and its square is 5 times the number. The number is__________?

A. 9
B. 17
C. 29
D. 295

The average of the two-digit numbers, which remain the same when the digits interchange their positions, is__________?

A. 33
B. 44
C. 55
D. 66

The average of first five multiples of 3 is____________?

A. 3
B. 9
C. 12
D. 15

Find the average of all the numbers between 6 and 34 which are divisible by 5.

A. 18
B. 20
C. 24
D. 30

The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?

A. 0
B. 1
C. 10
D. 19

Sarfaraz obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, Mathematics, Physics, Chemistry and Biology. What are his average marks?

A. 65
B. 69
C. 72
D. None of these

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