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
