ritesh

change 30 in 04 in equlivent fraction

For a bathing person supplies 5×10^3Kj energy in 20 litre of water at 15°c temperature.What is the change in temperature of this water?

A person is travelling by train and car in his whole journey.. The matter is if he is travelling first by train till 60kms and the rest by car, then his total journey has taken 4 hours.. but if he is travelling first by train till 100kms, then his journey...

sid went to play in the nearby park. on reaching the park,he saw that were a total of 14 bicycles and tricycles. if the total number of wheels was 32, how many tricycles were there ?

The cost of fencing a square field at rupees 1.60per meter is rupees 3200. Find the cost of reaping the field at rupees1.20per 100sq . meter

C(7,4)=35*4!=840 AS No of ways he can select 4 out of 7 is 35 and each he can arrange in different order in 4! ways.