A pentagonal prism has 15 edges. How many vertices does it have?

What is the slope of the line perpendicular to the line passing through the points (8,­2) and (3,­1)?

ΔABC is similar to ΔPQR. Length of AB is 18 cm and length of the corresponding side PQ is 12 cm. If area of ΔABC is 324 sq cm, what is the area of ΔPQR?

At what rate of compound interest per annum will a sum of Rs 20000 become Rs 23328 in 2 years?

Akash is 3 times as good a workman as Baldev and therefore is able to finish a job in 40 days less than Baldev. Working together, they can finish it in _____.

Find two numbers such that their mean proportion is 8 and third proportion is 64.

Marked price of an item is Rs 200. On purchase of 1 item discount is 22%, on purchase of 4 items discount is 33%. Rabia buys 5 items, what is the effective discount?

5 hrs after a goods train passed a station, another train travelling at a speed of 70 km/hr following that goods train passed through that station. If after passing the station the train overtakes the goods train in 9 hours. What is the speed of the goods train?