A rectangular grass plot 80 m × 60 m has two roads, each 10 m wide, running in the middle of it; one parallel to length and the other parallel to breadth. Find the cost of gravelling the roads at ₹ 2 per m². 

What is the number of cards in TAT test.

A can complete a piece of work in 10 days, B in 15 days and C in 20 days, A and C worked together for two days and then A was replaced by B. In how many days, altogether, work was completed?

What will be the work done by 3 moles of an ideal gas when it expands spontaneously in vacuum?

Who has recently become the new Director General of National Anti-Doping Agency (NADA)?

Each interior angle of a regular polygon is 144⁰. The number of sides of the polygon is 

The distance between the points (4, 8) and (k, -4) is 13. What is the value of k?