The speed of a train is 90 Kmph. What is the distance covered by it in 10 minutes?

In what time will a railway train 60 m long moving at the rate of 36 Kmph pass a telegraph post on its way?

The sum of the interior angles of a polygon is twice the sum of its exterior angles. How many sides does the polygon have?

Two trains of equal length 120 metres move in the same direction. The faster train completely overtakes the slower one in 15 seconds. If the slower train were to move at half its speed, the over taking would take in 10 seconds. At what speeds are the 2 trains moving (faster and slower respectively in m/s)

If (a – b) is 9 more than (c + d) and (a + b) is 3 less than (c – d), then (a – c) is:

When simplified, the product (1 – 1/2) (1 – 1/3) (1 – 1/4)…… (1 – 1/n) gives:

If a * b = 2a – 3b + ab, then 5 * 7 + 7 * 5 is equal to:

If x = a/(a – 1) and 1/(a – 1), then:

If a, b, c are integers; a² + b² = 45 and b² + c² = 40, then the values of a, b and c respectively are :

A girl was asked to multiply a certain number by 43. She multiplied it by 34 and got his answer less than the correct one by 1206. Find the number to be multiplied.