Quiz Discussion

A 6 × 6 grid is cut from an 8 × 8 chessboard. In how many ways can we put two identical coins, one on the black square and one on a white square on the grid, such that they are not placed in the same row or in the same column?

Course Name: Quantitative Aptitude

  • 1] 216 ways
  • 2] 324 ways
  • 3] 144 ways
  • 4] 108 ways
Solution
No Solution Present Yet

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# Quiz
1
Discuss

A coolie standing on a railway platform observe that a train going in one direction takes 4 second to pass him. Another train of same length going in opposite direction takes 5 seconds to pass him. The time taken (in seconds) by two train to cross each other will be:

  • 1]

    35 seconds

  • 2]

    36.5 seconds

  • 3]

    \(\frac{{40}}{9}\) seconds

  • 4]

    36 seconds

Solution
2
Discuss

if a man increase his speed by 3km/hr,he reaches his home in 3/4th of his normal time. if he decreases his speed by 3km/h he reaches his home 2 hours late. what is the distance the man travel to reach his home​

  • 1]

    32 km

  • 2]

    34 km

  • 3]

    36 km

  • 4]

    38 km

Solution
3
Discuss

Buses start from a bus terminal with a speed of 20 km/hr at intervals of 10 minutes. What is the speed of a man coming from the opposite direction towards the bus terminal if he meets the buses at intervals of 8 minutes ?

  • 1] 3 km/hr
  • 2] 4 km/hr
  • 3] 5 km/hr
  • 4] 7 km/hr
Solution
4
Discuss

Two cars are moving with speed v1, v2 towards a crossing along two roads, If their distance from the crossing be 40 metres and 50 metres at an instant of time then they do not collide if their speeds are such that :

  • 1]

    v1 : v2 =16 : 25

  • 2]

    v1 : v2 e 4 : 5

  • 3]

    v1 : v2 e 5 : 4

  • 4]

    v1 : v2 e 25 : 16

Solution
5
Discuss

A man can row 15 km/h in still water and he finds that it takes him twice as much time to row up than as to row down the same distance in the river. The speed of current (in km/h) :

  • 1] 6 km/h
  • 2] 6.5 km/h
  • 3] 4.5 km/h
  • 4] 5 km/h
Solution
6
Discuss

Walking at the rate of 4 km an hour, a man cover a certain distance in 3 hours 45 minutes. If he covers the same distance on cycle, cycling at the rate of 16.5 km/hour, the time taken by him is :

  • 1] 55.45 minutes
  • 2] 54.55 minutes
  • 3] 55.44 minutes
  • 4] 45.55 minutes
Solution
7
Discuss

If two incorrect watches are set at 12:00 noon at correct time, when will both watches show the correct time for the first time given that the first watch gains 1 min in one hour and second watch looses 4 min in two hours.

  • 1] 6 PM, 25 days later
  • 2] 12 noon, 30 days later
  • 3] 12 noon, 15 days later
  • 4] 6 AM, 45 days later
  • 5] None of these
Solution
8
Discuss

A car traveling with \(\frac{5}{7}\) of its usual speed covers 42 km in 1 hr 40 min 48 sec. What is the usual speed of the car?

 

  • 1]

    \(17\frac{6}{7}\) km/hr

  • 2]

    35 km/hr

  • 3]

    25 km/hr

  • 4]

    30 km/hr

Solution
9
Discuss

A can give 40 metres start to B and 70 metres to C in a race of one kilometre how many metres starts can B give to C in a race of one kilometre ?

  • 1]

    30 metres

  • 2]

    \(\frac{700}{29}\) metres

  • 3]

    \(31\frac{1}{4}\) metres

  • 4]

    32 metres

Solution
10
Discuss

Two trains 150 m and 120 m long respectively moving from opposite direction cross each other in 10 sec. If the speed of the second train is 43.2 km/hr, then the speed of the first train is :

  • 1] 54 km/hr
  • 2] 50 km/hr
  • 3] 52 km/hr
  • 4] 51 km/hr
Solution
# Quiz