Out of 100
students, two sections of 40 and 60 are formed. If you and your
friend are among the 100 students, what is the probability that
both enter the same sections?
both enter the different sections?
in survey of 60 people , it was found that 25 people read newspaper H , 26 read newpaper T , 26 read newspaper I , 9 read both H and I , 11 read both H and T , 8 read T and I , 3 read all these newspaper find
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soliving of this question ʃ(x+sinx)/1+cosx dx
six dice are thrown 729 times. how many times do you expect atleast 3 dice to show a five or a six?
In a single throw of three dice determine the probability of getting
(a) a total of 5
(b) a total of atmost 5
(c) a total of atleast 5
in a survey of 25 students it was found that 15 had taken mathematics,12 had taken physics and 11 had taken chemistry,5 had taken mathsematics and chemistry,9had taken mathematics and physics,4 had taken physics and chemistry and 3 had taken all three subjects.find the number of students who had taken-
Two students Anil and Ashima appeared for examination. The probability that Anil will pass is 0.05 and that Ashima will pass is 0.10 .The probability that both will pass the exam is 0.02 .Find the probability that :
a) both anil and ashima will pass
b) atleast one of them will not pass the exam
c) only one tf them will qualify the exam
Let S be the focus of the parabola y2 = 8x and let PQ be the common chord of the circle
A bag contains 6 red, 5 blue balls, another bag contains 5 red and 8 blue balls. Two balls are drawn from th first bag and without noticing its colour is put in the second bag. A ball is then drawn from the second bag. Find the probability that the ball drawn is blue in colour.
A,B and C are three mutually exclusive and exhaustive events associative with a random experiment. Find P(A),
If P(B) = 3/2 P(A) and 2P(C) =P(B)
Find the value of n if (i)2nC3 : nC3 = 12 : 1 (ii) 2nC3 : nC3 = 11:1
Find the probability that when a hand of 7 cards is drawn from a well shuffled deck of 52 cards, it contains (i) All king, (ii) 3 kings (iii) at least 3 kings.
In a certain lottery 10,000 tickets are sold and 10 equal prizes are awarded. What is the probability of not getting a prize if you buy
In a class of 60 students, 30 opted for NCC, 32 opted for NSS and
24 opted for both NCC and NSS. If one of these students is selected
at random, find the probability that
(i) The student opted for NCC or NSS.
(ii) The student has opted neither NCC nor NSS.
(iii) The student has opted NSS but not NCC.
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