Related Questions

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?
Streets A, B, and C are straight and level, and they intersect to form a triangle. If streets A and B intersect at a 60 degree angle and if street C is perpendicular to street B, at what acute angle do street A and C intersect?
From a batch of 3000light bulbs, 100 were selected at random and tested. If 5of bulbs on the sample found defective,How many defective bulb will be found in entire batch?
a box contains 20 electric bulbs , out of which 4 are defective . 2 bulbs are chosen at random from this box . The probability that at least one of these is defective is
A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random form this box. The probability that at least one of these is defective is ___
Which of the following gas is mostly used in town for street and domestic lighting and heating?
It is one street when the sun is shining another street in rain, and another under the full moon. How many streets are mentioned here
On a street with 25 house , 10 house have fewer than 6 rooms , 10 houses have more than 7 rooms and 5 houses have more than 8 rooms . What is the total number of hoses on the street that are either 6,7 or 8 room houses?
On a street with 30 house, 10 house have fewer than 4 rooms 14 houses have more than 5 rooms and 6 houses have more than 6 rooms what is the total number of hoses on the street that are either 4, 5 or 6 room houses?
The four bulbs of 40 W each are connected in series swift a battery across them, which of the following statement is true?