ECAT Admission Entry Test MCQs Practice Online

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Mathematics Solved MCQs Online Quiz Test

Q.1: 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?

  1. 28 4/7 years
  2. 31 5/7 years
  3. 32 1/7 years
  4. None of these

B

Q.2: The average of five consecutive odd numbers is 61. What is the difference between the highest and lowest numbers?

  1. 2
  2. 5
  3. 8
  4. Cannot be determined

C

Q.3: The average of non-zero number and its square is 5 times the number. The number is———-?

  1. 9
  2. 17
  3. 29
  4. 295

A

Q.4: The average of the two-digit numbers, which remain the same when the digits interchange their positions, is———-?

  1. 33
  2. 44
  3. 55
  4. 66

C

Q.5: The average of first five multiples of 3 is————?

  1. 3
  2. 9
  3. 12
  4. 15

B

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

  1. 18
  2. 20
  3. 24
  4. 30

B

Q.7: The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?

  1. 0
  2. 1
  3. 10
  4. 19

D

Q.8: Sarfaraz obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, Mathematics, Physics, Chemistry and Biology. What are his average marks?

  1. 65
  2. 69
  3. 72
  4. None of these

D

Q.9: A total of 3000 chocolates were distributed among 120 boys and girls such that each boy received 2 chocolates and each girl received 3 chocolates. Find the respective number of boys and girls?

  1. 70, 50
  2. 60, 60
  3. 50, 70
  4. 40, 80

B

Q.10: Rs. 6000 is lent out in two parts. One part is lent at 7% p.a simple interest and the other is lent at 10% p.a simple interest. The total interest at the end of one year was Rs. 450. Find the ratio of the amounts lent at the lower rate and higher rate of interest?

  1. 5 : 1
  2. 4 : 1
  3. 3 : 2
  4. 2 : 1

A