Question
Ashish is studying late into the night and is hungry. He
opens his mother’s snack cupboard without switching on the lights, knowing that his mother has kept 10 packets of chips and biscuits in the cupboard. He pulls out 3 packets from the cupboard and all of them turn out to be chips. What is the probability that the snack cupboard contains 1 packet of biscuits and 9 packets of chips ?Solution
The correct answer is C
Speed of a car and a bus is 18 km/h and 10 km/h, respectively. If the time taken by the car to cover a distance of ‘20x’ km is 1 hour less than time...
A was travelling from point X to point Y. He increased his speed by 14 km/h after every hour. He reached his destination in 18 hours. If his initial spe...
1200 metres long train crosses a man who is moving in the same direction with a certain speed, in 30 seconds. If the same train can cross a tree in 20 s...
A train 'B' speeding with 100 kmph crosses another train C, running in the same direction, in 2 mins. If the length of the train B and C be 150m and 250...
Person 'A' left the college at 7 PM at 65% of the original speed. After 30 minutes, he reached the grocery store, picked up a bag...
A cyclist travels 30% of the total route at the speed of 8 km/hr in ...
A bike covers 60 km with a speed of 20 km/hr. Find the speed of the bike for the next 50 km journey so that the average speed of the whole journey will ...
A car running with a speed of ‘x’ m/sec makes 5 rounds of a circular field having radius 42 metres, in 10 seconds. Find the time taken by ca...
In a 1000-metre race, 'Ravi' beats 'Shyam' by '200' metres and 'Raj' by '300' metres. If 'Shyam' and 'Raj' participate in a 400-metre race, and 'Raj' ge...
- 'A' takes 20 minutes more than 'B' to travel 'x' km. If the speed of 'A' and 'B' is 18 km/h and 24 km/h, respectively, find the value of 'x'.