A person has undertaken a construction job. The probabilities are 0·65 that there will be strikes 0·80, that the construction job will be completed on time if there is no strike, and 0·32 that the construction job will be completed on time if there is a strike. Determine the probability that the construction job will be completed on time.

In 100 attempts different coloured regions were striked in given number of times. : Find the probability that next attempt will srike Red region.

In 100 attempts different coloured regions were striked in given number of times. : Find the probability that next attempt will srike Green region.

A die is numbered in such a way that its faces show the numbers 1, 2, 2, 3, 3, 6. It is thrown two times and the total score in two throws is noted. Complete the following table which gives a few values of the total score on the two throws : : What is the probability that the total score is : at least 6 ?

A die is numbered in such a way that its faces show the numbers 1, 2, 2, 3, 3, 6. It is thrown two times and the total score in two throws is noted. Complete the following table which gives a few values of the total score on the two throws : : What is the probability that the total score is : even ?

Three persons A,B and C apply for a job of manager in a private company. Chances of their selection are in the ratio 1:2:4. The probabilities that A,B and C can introduce changes to improve profits of the company are 0.8, 0.5 and 0.3 respectively. If the change does not take place, find the probability that it is due to appointment of C.

Three persons A, B and C apply for a job of Manager in a Private Company. Chances of their selection (A, B and C) are in the ratio 1 : 2 : 4. The probabilities that A, B and C can introduce changes to improve profits of the company are 0.8, 0.5 and 0.3 respectively. If the change does not take place, find the probability that it is due to the appointment of C.

A hammer of mass 500 g moving at 50ms ^(-1) , strikes a nail. The nail stops the hammer in a very short time of 0.01 s. What is the force of the nail on the hammer ?

Two coins are tossed 400 times, we get: Two heads: 128 times, One head: 160 times, No head : 112 times when two coins are tossed at random, what is the probability of getting 0 head?

Three coins are tossed simultaneously 150 times and it is found that 3 heads appear 25 times, 2 heast appear 40 times, 1 head appears 75 times and no head appears 10 times. If three coins are tossed simultaneously at random, find the probability of getting: 0 head