Average MCQ

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• The average of the two-digit numbers, which remain the same when the digits interchange their positions, is-
  ক

  33

  খ

  44

  গ

  55

  ঘ

  66
• The average of five consecutive numbers is x. If the next two numbers are included, how shall the average vary?
  ক

  It shall increase by 1

  খ

  It shall remain the same

  গ

  It shall increase by 1.4

  ঘ

  It shall increase by 2
• The average price of 10 books is Rs. 12 while the average price of 8 of these books is Rs. 11.75. Of the remaining two books, if the price of one book is 60% more than the price of the other, what is the price of each of these two books?
  ক

  Rs. 5, Rs. 7.50

  খ

  Rs. 8, Rs. 12

  গ

  Rs. 10, Rs. 16

  ঘ

  Rs. 12, Rs. 14
• The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?
  ক

  0

  খ

  1

  গ

  10

  ঘ

  19

  ঙ

  None of these
• A family consists of two grandparents, two 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?
  ক

  $$28\frac{4}{7}$$ years

  খ

  $$31\frac{5}{7}$$ years

  গ

  $$32\frac{1}{7}$$ years

  ঘ

  None of these
• The average height of A, B and C is 148 cm. If the average height of A and B is 136 cm and that of B and C is 125 cm, then what is the height (in cm) of B?
  ক

  56

  খ

  78

  গ

  112

  ঘ

  130
• The mean of the 5 smallest numbers from a group is 15 while the mean of all the 13 members of the group taken together is 17. What is the mean of the 8 largest numbers?
  ক

  18.50

  খ

  17.75

  গ

  18.75

  ঘ

  18.25
• The average marks obtained by a group of 16 students was 20. One student left the group as a result of which the average of the remaining students rose to 21. But another student joined, as a result of which the average marks of the group dropped a bit and became 20.5. What was the average marks obtained by the student who left and the one who joined?
  ক

  10

  খ

  11

  গ

  8

  ঘ

  9
• What will be the average of all the prime numbers before 19?
  ক

  8.28

  খ

  11.5

  গ

  5.34

  ঘ

  9.63
• What is the average of 90, 250, 240, 204, and 616?
  ক

  280

  খ

  210

  গ

  230

  ঘ

  255
• Samit was given some money to take care of his travel during a 6-day sales drive he had to undertake. However, he had to increase his stay by another 4 days and as a result his average daily travel allowance went down by Rs. 56. What was the amount that was sanctioned to him in the beginning?
  ক

  Rs.336

  খ

  Rs.560

  গ

  Rs.840

  ঘ

  Rs.420
• The average of 10 numbers is 30. If at the time of calculation one number was wrongly taken as 36 instead of 69, then what will be the correct average?
  ক

  33

  খ

  33.3

  গ

  36

  ঘ

  39
• What is the average of 36, 43, 51, 68, and 77?
  ক

  47

  খ

  49

  গ

  55

  ঘ

  64
• The average of 7 numbers is 30. If the average of first three numbers is 25 and that of last three numbers is 35, then what is the fourth number?
  ক

  30

  খ

  35

  গ

  37.5

  ঘ

  40
• What is the average of all the one digit, two digit and three digit natural numbers?
  ক

  300

  খ

  500

  গ

  1000

  ঘ

  1250
• What is the average of all the one digit and two digit natural numbers?
  ক

  25

  খ

  40

  গ

  50

  ঘ

  99
• The average of 10 numbers is X and one of the number is 38. If 38 is replaced with 19, then what will be the new average?
  ক

  X\u2013 (1\/2) \

  খ

  X\\u2013 (1\/19) \

  গ

  X\\u2013 (19\/10) \

  ঘ

  X\\u2013 (19\/9)
• Of the three numbers, the average of the first number and the second number is 37 more than the average of second number and third number. What is the difference between the first and the third number?
  ক

  74

  খ

  73

  গ

  37

  ঘ

  cannot be determined
• Average of 31 numbers is 19. If the average of first 8 numbers is 24, then what is the average of the remaining numbers?
  ক

  17.26

  খ

  23.25

  গ

  26.2

  ঘ

  25.45
• The average of 6 consecutive integers is 15/2. What is the average of last three integers?
  ক

  8

  খ

  9

  গ

  17\/2

  ঘ

  7
• What is the average of all numbers between 100 and 200 which are divisible by 13?
  ক

  147.5

  খ

  145.5

  গ

  143.5

  ঘ

  149.5
• The average weight of P, Q and R is 45 kg. If the average weight of P and Q be 36.5 kg and that of Q and R be 52 kg, then what is the weight (in kgs) of Q?
  ক

  42

  খ

  44

  গ

  46

  ঘ

  48
• What is the average of all numbers between 8 and 74 which are divisible by 7?
  ক

  40

  খ

  41

  গ

  42

  ঘ

  43
• What is the average of all numbers between 11 and 80 which are divisible by 6?
  ক

  46

  খ

  47

  গ

  44

  ঘ

  45
• The average of four consecutive odd numbers is 64. What is the value of largest number?
  ক

  65

  খ

  69

  গ

  71

  ঘ

  67
• Of the 3 numbers whose average is 40, the first is 1/3 rd the sum of other 2. What is the first number?
  ক

  20

  খ

  50

  গ

  25

  ঘ

  30
• Among four students sitting in a row, average age of last three students is 20 years and the average age of first three students is 21 years. If the age of first student is 26 years, then what is the age (in years) of the last student?
  ক

  23

  খ

  37

  গ

  24

  ঘ

  29
• What is the average of all natural numbers from 21 to 39?
  ক

  30

  খ

  31

  গ

  29

  ঘ

  28
• What is the average of first 19 odd numbers?
  ক

  9.5

  খ

  15.5

  গ

  19

  ঘ

  38
• A batsman makes a score of 95 runs in the 13th match and thus increases his average runs per match by 4. What is his average after the 13th match?
  ক

  47

  খ

  43

  গ

  45

  ঘ

  49