Start learning 50% faster. Sign in now
Required number of ways = 9 C3 × 7C4 = 9! / (3!6!) × 7! / (4!3!) = (84×35) = 2940
Riya rides a bike at an average speed of 50 kmph and reaches her destination in 6 hours. Himani covers the same distance in 5 hrs. If Riya increases her...
‘I’ and ‘J’ started moving towards each other at the same time with a speed of 35 km/hr and 25 km/hr, respectively. If the distance covered by �...
The speed of two cars A and B are in the ratio of 10:13 respectively. Car A travels 18 km less than the car B in the same time duration. What was the di...
'A' starts a journey and covers the first half of the total distance at a speed of 15 km/hr. Then, he travels half of the remaining distance at 5 km/hr ...
A car travels 240 km in 4 hours. After 2 hours, it increases its speed by 20 km/h and covers the remaining distance in 1 hour. What is the speed of the ...
A and B are travelling towards each other with a speed of 20 km/hr and 30 km/hr. They started at same time and A covered 30 km less distance than B befo...
A train travels from Station A to Station B at a speed of 60 km/h and returns from Station B to Station A at a speed of 40 km/h. If the distance between...
A car typically takes 15 hours to cover a distance of 240 km. However, after traveling 47.5% of the total distance at its usual speed, the car's speed ...
A,B and C run around a Circular track starting from the same point simultaneously and in the same direction at the speed of 8 kmph, 12 kmph and 16 kmph ...