A car covers 4 successive 3km stretches at speed of 10kmph, 20kmph, 30kmph & 60kmph resp. Its average speed is?

I forgot the last digit of a 7 digit telephone number. If one randomly dial the final three digits after correctly diall…

If 120 km is done by train and the rest by car, then it takes 8 hours for a 600 km journey. Of 200 km is done by train a…

The total age of A and B is 12 years more than the total age of B and C. C is how many years younger than A ?

The remainder when 1010+ 10100+101000+ . . . . . . + 101000000000 is divided by 7 is

The length of a room is 5.5 m and width is 3.75 m. Find the cost of paving the floor by slabs at the rate of Rs.800 per …

A man can cover a distance in 1hr 24min by covering 2/3 of the distance at 4 km/h and the rest at 5km/h. The total dista…

The ratio of the current ages of Ajay and Vijay is 7:4. The ratio between Ajay's age 6 years ago and Vijay's age 6 years…