Quiz Discussion

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

Course Name: Quantitative Aptitude

  • 1]

    0

  • 2]

    -1

  • 3]

    1

  • 4]

    None Of These

Solution
No Solution Present Yet

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# Quiz
1
Discuss

The frequency distribution data is given below. If the average age is 17 years, the value of m is

  • 1] 1
  • 2] 2
  • 3] 3
  • 4] 4
Solution
2
Discuss

The average of the first five multiples of 3 is-

  • 1] 3
  • 2] 9
  • 3] 12
  • 4] 15
Solution
3
Discuss

The average of 20 students is 12 years, if the teacher's age is included, average increases by one. The age of the teacher is:

  • 1] 30 years
  • 2] 33 years
  • 3] 28 years
  • 4] 35 years
Solution
4
Discuss

30 pens and 75 pencils altogether were purchased for Rs. 510. If the average price of a pencil was Rs. 2, what was the average price of a pen ?

  • 1] Rs. 9
  • 2] Rs. 10
  • 3] Rs. 11
  • 4] Rs. 12
Solution
5
Discuss

A batsman makes a score of 87 runs in the 17th inning and thus increases his average by 3. Find his average after 17th inning.

  • 1]

    40

  • 2]

    39

  • 3]

    52

  • 4]

    55

Solution
6
Discuss

A cricketer scored some runs in his 21st innings, as a result, his average runs increased by 3. If the present average run is 40, how many runs he scored in the final innings?

  • 1] 103
  • 2] 100
  • 3] 85
  • 4] 82
Solution
7
Discuss

The average marks of four subjects is 120. If 33 was misread as 13 during the calculation, what will be the correct average?

 

  • 1] 122
  • 2] 120
  • 3] 125
  • 4] 121
Solution
8
Discuss

The average of marks in Mathematics for 5 students was found to do 50. Later, it was discovered that in the case of one student the marks 48 were misread as 84. The correct average is :

  • 1] 40.2
  • 2] 40.8
  • 3] 42.8
  • 4] 48.2
Solution
9
Discuss

A has 50 coins of 10 paise denominations. While B has 10 coins of 50 paise denominations. C has 20 coins of 25 paise denominations while D has 25 coins of 20 paise denominations. The average number of paise per person is :

  • 1] 450 paise
  • 2] 500 paise
  • 3] 550 paise
  • 4] 650 paise
Solution
10
Discuss

The mean high temperature of the first four days of a week is 25°C whereas the mean of the last four days is 25.5°C. If the mean of the whole week is 25.2°C then the temperature of the 4th day is :

  • 1] 25°C
  • 2] 25.2°C
  • 3] 25.6°C
  • 4] 25.5°C
Solution
# Quiz