A box contains 10 electric bulbs from which 2 bulbs are defective . Two bulbs are chosen at random. What is the probability that one of them is defective?

Three pipes A, B and C can fill a tank in 6 hours. After working at it together for 2 hours. C is closed and A...

If x= 7 - then find the value of

An employer pays 3 workers X, Y and Z a total of Tk. 36600 a week. X is paid 125% of the amount Y is paid and...

The volume of a rectangular solid is to be increased by 50% without altering its base. To what extent the heig...

X is west of Y and Y is north of Z. m is south of X. Which directin is M to Z?

All birds have beaks , and sparrows are birds, so all sparrows must have beaks.