What is the measure of the angle formed by the hour and minute hand when the time to 10' O clock? 

If a chord of length 30 cm is at a distance of 8 cm from the center of the circle, then the length of the chord of the same circle which is at a distance of 15 cm from the center is equal to

A passenger train covers the distance between stations A and B, 50 minutes faster than a goods train. Find this distance between A and B if the average speed of the passenger train is 60 km/h and that of goods train is 20 km/h?

What value will come in place of question mark (?) in the questions given below?

88 × 25 ÷ 4 + 6³ = ?

A root of equation $$({ax}^2+bx+c)$$ (where a, b and c are rational numbers) is 5 +3√3. What is the value of $$({a}^2+b^2+c^2) / (a+b+c) ? $$

The sum of square of two number is 68 and square of the different of them is 36. Then multiplication value of two is.

There are two temples, one on each bank of a river just opposite to each other. One temple is 54m high. From the top of this temple, the angles of depression of the top and the foot of the other temple are 30° and 60° respectively. The length of the other temple is; 

If 40% of (A+B) = 60% of (A-B) then $${2A-3B}\over {A+B}$$ is