WB JEE 2009 | Probability Question 3 | Mathematics

WB JEE 2009

MCQ (Single Correct Answer)

-0.25

A and B are two independent events such that P(A $$\cup$$ B') = 0.8 and P(A) = 0.3. Then P(B) is

2/7

2/3

3/8

1/8

WB JEE 2009

MCQ (Single Correct Answer)

-0.25

Three numbers are chosen at random from 1 to 20. The probability that they are consecutive is

$${1 \over 190}$$

$${1 \over 120}$$

$${3 \over 190}$$

$${5 \over 190}$$

WB JEE 2010

MCQ (Single Correct Answer)

-0.25

Two dice are tossed once. The probability of getting an even number at the first die or a a total of 8 is

$${1 \over {36}}$$

$${3 \over {36}}$$

$${11 \over {36}}$$

$${23 \over {36}}$$

WB JEE 2010

MCQ (Single Correct Answer)

-0.25

The probability that at least one of A and B occurs is 0.6. If A and B occur simultaneously with probability 0.3, then P(A') + P(B') is

0.9

0.15

1.1

1.2

WB JEE Subjects