EduDose
  • Home
  • GK
  • Maths
  • Reasoning
  • English
  • Computer
  • Mock Tests
  • Today’s GK
  • Menu Menu

Average Exercise 1

You are here: Home1 / Maths2 / Average Exercise 1
Next: Average Exercise 2
हिंदी वर्जन
Time limit: 0

Finish Test

0 of 23 questions completed

Questions:

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20
  21. 21
  22. 22
  23. 23

Information

  • Most Important Multiple Choice Questions
  • Online Exercise on Average with Correct Answer Key and Solutions
  • Useful for all Competitive Exams

You have already completed the quiz before. Hence you can not start it again.

Test is loading...

You must sign in or sign up to start the quiz.

You have to finish following quiz, to start this quiz:

Results

0 of 23 questions answered correctly

Time has elapsed

You have reached 0 of 0 points, (0)

Categories

  1. Not categorized 0%
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20
  21. 21
  22. 22
  23. 23
  1. Answered
  2. Review
  1. Question 1 of 23
    1. Question

    What is the average of the following set of numbers?

    965, 362, 189, 248, 461, 825, 524, 234

    Hint

    Required average

    average-26953.png

    = average-26947.png

  2. Question 2 of 23
    2. Question

    What is the average of the following set of numbers?

    341, 292, 254, 375, 505, 639

    Hint

    Required average

    = average-26929.png

    = average-26923.png

  3. Question 3 of 23
    3. Question

    What is the average of the following set of numbers?

    118, 186, 138, 204, 175, 229

    Hint

    Required average

    = average-26917.png

    = average-26911.png= 175

  4. Question 4 of 23
    4. Question

    What is the average of the following set of numbers?

    178, 863, 441, 626, 205, 349, 462, 820

    Hint

    Required average

    = average-26905.png

    = average-26899.png = 493

  5. Question 5 of 23
    5. Question

    What is the average of the following set of numbers?

    361, 188, 547, 296, 656, 132, 263

    Hint

    Required average

    = average-26893.png

    = average-26887.png = 349

  6. Question 6 of 23
    6. Question

    If 25a + 25b = 115, then what is the average of a and b?

    Hint

    25a + 25b = 115

    average-26861.png

    ∴ Average of a and b =average-26855.png

  7. Question 7 of 23
    7. Question

    If the value of 16a + 16b = 672, what is the average of a and b?

    Hint

    16a + 16b = 672

    or, 16 (a + b) = 672

    ∴ a + b = average-26837.png = 42

    Required average = average-26831.png

    = average-26825.png = 21

  8. Question 8 of 23
    8. Question

    If 37a + 37b = 5661, what is the average of a and b?

    Hint

    37a + 37b = 5661

    ⇒ 37(a + b) = 5661

    ⇒ a + b = average-26819.png = 153

    ∴ Average = average-26813.png= 76.5

  9. Question 9 of 23
    9. Question

    If the mean of the numbers 27 + x, 31 + x, 89 + x, 107 + x, 156 + x is 82, then the mean of 130 + x, 126 + x, 68 + x, 50 + x, 1 + x is:

    Hint

    Given, average-27561.png

    ⇒ 82 × 5 = 410 + 5x ⇒ 410 – 410 = 5x ⇒ x = 0

    ∴ Required mean is,

    average-27554.png

    average-27548.png

  10. Question 10 of 23
    10. Question

    The average of two numbers is XY. If one number is X, then the other number is

    Hint

    Let the other number is N.

    Then, average-27267.png

    ⇒ N = 2XY – X

  11. Question 11 of 23
    11. Question

    The average of 5 consecutive even numbers A, B,C,D and E is 52. What is the product of B and E?

    Hint

    Let the five consecutive even numbers be

    x, x + 2, x + 4, x + 6 and x + 8 respectively.

    According to the question,

    x + x + 2 + x + 4 + x + 6 + x + 8

    = 5 × 52

    ⇒ 5x + 20 = 260

    ⇒ 5x = 260 – 20

    ⇒ x = average-27143.png= 48

    ∴ B = x + 2 = 48 + 2 = 50 and

    E = x + 8 = 48 + 8 = 56

    ∴ B × E = 50 × 56 = 2800

  12. Question 12 of 23
    12. Question

    The average of 5 consecutive odd numbers A, B, C, D and E is 41. What is the product of A and E?

    Hint

    Let the consecutive odd numbers be

    x, x + 2, x + 4, x + 6 and x + 8

    According to the question.

    average-27137.png= 41

    ⇒ 5x + 20 = 41 × 5 = 205

    ⇒ 5x = 205 – 20 = 185

    ∴ x = average-27131.png = 37

    ∴ A = 37 and E = 37 + 8 = 45

    Required product = 37 × 45 = 1665

  13. Question 13 of 23
    13. Question

    The average of 5 consecutive even number A, B, C, D and E is 34. What is the product of B and D?

    Hint

    Let A = x,

    According to the question,

    A + B + C + D + E

    = x + (x + 2) + (x + 4) + (x + 6) + (x 8)

    ⇒ 5x + 20 = 34 × 5 = 170

    ⇒ B × D = 32 × 36 = 1152

  14. Question 14 of 23
    14. Question

    The average of four consecutive odd numbers is 12.Which is the lowest odd number?

    Hint

    Let the four consecutive odd numbers be

    2x – 3, 2x – 1, 2x + 1 and 2x + 3.

    Now, 2x = 12 or, x = 6

    Lowest odd no. = 2 × 6 – 3 = 9

  15. Question 15 of 23
    15. Question

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

    Hint

    Suppose the consecutive odd numbers are:

    x, x + 2, x + 4, x + 6 and x + 8

    Therefore, the required difference = x + 8 – x = 8

    Note that answering the above question does not require the average of the five consecutive odd numbers.

  16. Question 16 of 23
    16. Question

    The average of three consecutive odd numbers is 14 more than one-third of the first of these numbers, what is the last of these numbers?

    Hint

    Let the three consecutive odd numbers be

    x – 2, x, x + 2 respectively.

    According to question,

    average-27240.png

    ∴ 3x – x + 2 = 42 ⇒ 2x = 40

    ∴ x = 20 = an even number, which goes against our supposition.

  17. Question 17 of 23
    17. Question

    The average of four consecutive even numbers is one-fourth of the sum of these numbers. What is the difference between the first and the last number?

    Hint

    Let the four consecutive even number be

    2x, 2x + 2, 2x + 4 and 2x + 6 respectively.

    Required difference = 2x + 6 – 2x = 6

  18. Question 18 of 23
    18. Question

    The average of five numbers is 281. The average of the first two numbers is 280 and the average of the last two numbers is 178.5. What is the third number?

    Hint

    Assume the third number = x

    According to question

    2 × 280 + x + 178.5 × 2 = 281 × 5

    ⇒ 560 + x + 357 = 1405

    ⇒ x + 917 = 1405

    ⇒ x = 1405 – 917 = 488

  19. Question 19 of 23
    19. Question

    Out of the three given numbers, the first number is twice the second and thrice the third. If the average of the three numbers is 121, what is the difference between the first and the third number?

    Hint

    Let the third number be = x

    ∴ First number = 3x and second number = average-27125.png

    According to the question.

    ⇒ 3x + average-27119.png + x = 3 × 121

    ⇒ average-27113.png= 3 × 121

    ⇒ average-27106.png= 3 × 121

    ∴ x = average-27100.png = 66

    ∴ Third number = 66

    Required difference

    = 3x – x = 2x = 2 × 66 = 132

  20. Question 20 of 23
    20. Question

    The average of the first and the second of three numbers is 15 more than the average of the second and the third of these numbers. What is the difference between the first and the third of these three numbers?

    Hint

    Set the first, second and third no be F, S and T respectively,

    average-27285.png

    Solving, we get F – T = 30.

  21. Question 21 of 23
    21. Question

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

    Hint

    Average of 20 numbers = 0.

    ∴ Sum of 20 numbers

    = (0 × 20) = 0.

    It is quite possible that 19 of these numbers may be positive and if their sum is a, then 20th number is (– a).

  22. Question 22 of 23
    22. Question

    The average of six numbers is 3.95. The average of two of them is 3.4, while the average of the other two is 3.85. What is the average of the remaining two numbers?

    Hint

    Sum of the remaining two numbers

    = (3.95 × 6) – [(3.4 × 2) + (3.85 × 2)]

    = 23.70 – (6.8 + 7.7)

    = 23.70 – 14.5 = 9.20

    ∴ Required average

    = average-27314.png

  23. Question 23 of 23
    23. Question

    The average of 10 numbers is 40.2 Later it is found that two numbers have been wrongly copied. The first is 18 greater than the actual number and the second number added is 13 instead of 31. Find the correct average.

    Hint

    Sum of 10 numbers = 402

    Corrected sum of 10 numbers

    = 402 – 13 + 31 – 18 = 402

    Hence, new average average-27517.png

Most Viewed Topics on EduDose
G.K.
Maths
Reasoning
English

© Copyright - edudose.com
  • Facebook
  • Twitter
  • Privacy
  • Copyright
  • Sitemap
  • About | Contact
Scroll to top