A bag contains 20 tickets numbered from 1 to 20. Two tickets are drawn at random. What is the probability that both numbers are prime?

A bag contains 20 tickets numbered from 1 to 20. Two tickets are drawn

1.	A bag contains 20 tickets numbered from 1 to 20. Two tickets are drawn at random. What is the probability that both numbers are prime?
A.	8 20
B.	14 95
C.	7 20
D.	21 190
Answer» C. 7 20

Discussion

No Comment Found

Related MCQs

The radii of two concentric circles are 12 cm and 6 cm. AB is the diameter of the bigger circle and BD is a tangent to the smaller circle touching it at D and the bigger circle at E in such a way that it forms an angle of 90 degree at E with A. Point A is joined to D. The length of AD is –
A solid hemisphere is attached to the base of the right circular cone of diameter 20 cm and height 10 cm if this object is to be inscribed in a right circular cylinder then find the vacant space left in the cylinder?
Two trains are moving in the opposite direction and their speeds are in the ratio of 2 : 1. If the first train crosses a standing man in 5 sec and another train crosses the same man in 8 sec, then determine the time taken by trains to cross each other.
The ratio of efficiency of P is to R is 7 : 4 and the ratio of number of days taken by Q is to R is 2 : 3 while working alone P takes 9 days less than R to complete the work. If Q and R started the work and left after 2 days then find the number of days taken by P to finish the remaining work?
The population of a town is 31250. If the population increases by 20% in one year, but decreases in second year by 20% and the process goes like this for 6 years. Find the number of women after 6 years if the ratio of women, child and men after 6 years is 5 : 3 : 1.
Mr. Sharma invested an amount of Rs. 25000 in a fixed deposit at compound interest 8% per annum for two years. What amount Mr. Sharma will get on maturity?
An alloy contains zinc, copper and tin the ratio 2 : 3 : 1 and another contains copper, tin and lead in the ratio 5 : 4 : 3. If equal weights of both alloys are melted together to form a third alloy, then the weight of lead per kg in the new alloy will be
A man completed certain journey by a car. If he covered 30% of the distance at a speed of 30 km/hr, 60% distance at 20 km/hr and the remaining distance at 5 km/hr then what was his average speed during the entire journey?
A pendulum at the first floor of an office ticks 90 times in 95 seconds while another pendulum at the second-floor ticks 315 times in 323 seconds. If both the pendulum were started together, how many times will they tick together in the first hour?
In a family of husband, wife and a daughter, the sum of the husband’s age, twice the wife’s age, and thrice the daughter’s age is 85; while the sum of twice the husband’s age, four times the wife’s age, and six times the daughter’s age is 170. It is also given that the sum of five times the husband’s age, ten times the wife’s age and fifteen times the daughter’s age equals 450. The number of possible solutions, in terms of the ages of the husband, wife and the daughter, to this problem is

A bag contains 20 tickets numbered from 1 to 20. Two tickets are drawn at random. What is the probability that both numbers are prime?

Discussion

No Comment Found

Related MCQs

Reply to Comment