In a group of 50 people; 35 speak Hindi, 25 speak both English and Hindi and all people speak at least one of the two languages. how many people speak only English and not Hindi? How many people speak English?
How many solutions are there to the equation
x1+x2+x3+x4+x5=21,
where xi, i=1, 2, 3, 4, 5, is a non negative integer such that
b) xi≥1 for i=1, 2, 3, 4, 5?
c) 0≤x1≤11?
1. A chartered Accountant applies for a job in two firms X and Y. He estimates that the probability of his being selected in firm X is 0.7 and being rejected in Y is 0.5 and the probability that atleast one of his applications rejected is 0.6. What is the probability that he will be selected in one of the firms?
600 students took test on physics and chemistry. 35% students failed in physics and 45% students failed in chemistry and 40% of those who passed in chemistry also in physics, then how many students failed in both.
A table has 7 seats, 4 placed on one side facing towards window and 3 placed on the opposite side. In how many ways can 7 people be seated at the table if 3 people x,y and z have to be seated on the side facing towards window?