1) Prachi gives 2 exams in a day. Chances of clearing each exam are 0.45 and 0.75 respectively. Then what is the probability that she cleared atleast 1 exam ?
A. 0.9
B. 0.725
C. 0.8625
D. 0.8125
2) Ramesh wants to go to China by airplane. There are 3 flights available Jet, Indigo and Spice airlines. Then what is the probability that he chose Indigo ?
A. 1/2
B. 2/3
C. 1/3
D. 3/4
3) Two dices are rolled simulataneously. Then what is the probability even numbers on both dices ?
A. 1/12
B. 1/4
C. 1/9
D. 4/9
4) A bag contains 4 white and 3 black balls. 3 balls are drawn at randomn. What is the probability of none of the balls being black ?
A. 3/35
B. 2/35
C. 1/35
D. 4/35
5) In a society of 50 members, 10 speaks both english and hindi, 15 speak both english and punjabi and 5 speak both hindi and punjabi. There are 5 members who speak all 3 languages. Then what is the probability of choosing a member who speaks only one of the languages ?
A. 3/10
B. 2/5
C. 1/5
D. 1/10
6) From a set of first 50 natural numbers, 2 numbers are chosen at randomn. Then what is the probability that one of them is a multiple of 5 and other is a multiple of 3 ?
A. 16/245
B. 32/245
C. 9/245
D. 62/245
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