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1.What is the probability of an impossible event?

1

0

.5

cannot be determined

2) A coin is tossed twice,what is the probability of getting atleast one tail

1/2

3/4

1/3

None of these

3.An unbiased dice is tossed,which of these is false

Probability of getting number greater than 6 is zero

Probability of getting prime number is 1/2

Probability of getting number greater than 4 is 1/3

None of these

4. Find the probability of getting 53 Fridays in a leap year. ?

1/3

1/7

2/7

None of these

5. A die is thrown twice. Find the probability of getting doublet?

1/2

1/6

1/4

None of these

6. The probability of getting defective bulb in a lot of 400 is 0.2 Then find the no. of defective bulb in the lot?

20

30

60

80

7.A bag contain 1 black, 2 red and 3 white balls. A ball is drawn from the bag at random. Find the probability that the ball drawn is black??

1/6

2/3

1/5

None of these

8.A box contains 10 balls numbered from 1 to 10. A ball is picked from the box,What is the probability of getting perfect square number

1/10

2/5

3/10

none of these

9.A letter is choosen from word ASSIGNMENTS, what is the probability of getting a vowel?

1/10

3/11

1/5

None of these

10.100 tickets of a lottery were sold and there are five prizes in the lottery. If Lalit has purchased one ticket, what is the probability of his winning a prize?

1/100

1/20

2/5

none of these