The volume of a solid right circular cylinder is 5236 cm³, and its height is 34 cm. What is its curved surface area (in cm²)?

Find value of

A glass jar contains 6 white, 8 black, 4 red and 3 blue marbles. If a single marble is chosen at random from the jar, what is the probability that it is black or blue?

If and , then what is the value of ?

Two men are standing on opposite ends of a bridge 1200 meters long. If they walk towards each other at the rate of 5m/minutes respectively, in how much time will they meet each other?

Direction: The following table shows the number of students of 7 colleges A, B, C, D, E, F, G participating in extra-curricular activities :

The college in which minimum number of students participate in extracurricular activities is ? 

When the price of an audio system was reduced by 20%, the sale increased by 80%. What was the net effect on the sale?

Find the value of k in