Quiz Discussion

The average of runs scored by a cricketer in his 99 innings is 99. How many runs will he have to score to his 100th innings so that his average of runs in 100 innings will become 100 ?

Course Name: Quantitative Aptitude

  • 1] 100
  • 2] 99
  • 3] 199
  • 4] 101
Solution
No Solution Present Yet

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In an exam, the average marks obtained by Jhon in English, Math, Hindi and Drawing were 50. His average mark in Maths, Science, Social Studies and Craft were 70. If the average mark in all seven subjects is 58, his score in Maths was -

  • 1] 50
  • 2] 52
  • 3] 60
  • 4] 74
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What is the average of the first six (positive) odd number each of which is divisible by 7?

  • 1] 42
  • 2] 43
  • 3] 47
  • 4] 49
Solution
3
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The average of nine number is 50. The average of first five numbers is 54 and that of the last three numbers is 52. Then the sixth number is :

  • 1] 30
  • 2] 34
  • 3] 24
  • 4] 44
Solution
4
Discuss

Find the average of first 97 natural numbers.

 

  • 1] 47
  • 2] 37
  • 3] 48
  • 4] 49
  • 5] 49.5
Solution
5
Discuss

A train covers the first 16 km at a speed of 20 km per hour another 20 km at 40 km per hour and the last 10 km at 15 km per hour. Find the average speed for the entire journey.

 

  • 1]

    24 km

  • 2]

    26 km

  • 3]

    21 km

  • 4]

    km

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The average (arithmetic mean) of 330, 360 and 390 is :

  • 1]

    \({3^{27}} + {3^{57}} + {3^{87}}\)

  • 2]

    \({3^{29}} + {3^{59}} + {3^{89}}\)

  • 3]

    \({3^{60}}\)

  • 4]

    \({3^{177}}\)

Solution
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The average age of P, Q and R is 15 years more than R's age. If the total age of P and Q together is 39 years, then R's age is ?

  • 1] 12 years
  • 2] 24 years
  • 3] 16 years
  • 4] 14 years
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8
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The average of first five multiples of 3 is:

  • 1] 9
  • 2] 10
  • 3] 8
  • 4] 11
Solution
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The average of runs of a cricket player of 10 innings was 32. How many runes must be made in his next innings so as to increase his average of runs by 4?

  • 1] 72
  • 2] 74
  • 3] 70
  • 4] 76
Solution
10
Discuss

Amount five people with monthly income (in Rs.) 15000, 26000, 16000, 19000, 50000, how many will have income less than the mean income of five people?

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