For the following questions answer them individually
A thief escaped from the police and drove away in a bike at 100 km/h. The police immediately started chasing at 75 km/h. After an hour, there was an engine problem in the police vehicle which took 30 minutes to set it right. Thereafter, the speed of the vehicle picked up to 120 km/h. After how much time was the thief caught?
Starting from a point, Raju walked 12 m north, he turned right and walked 10 m, he again turned right and walked 12 m, then he turned left and walked 5 m. How far is he now and in which direction from the starting point?
If 'P' denotes '-', 'Q' denotes '÷', 'R' denotes 'x' and 'W' denotes '+', then 48 Q 12 R 10 P 8 W 4?
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 m².
Find the value of$$ \frac{1}{\sqrt{2}+\sqrt{3}-\sqrt{5}}$$+$$\frac{1}{\sqrt{2}-\sqrt{3}-\sqrt{5}}$$
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