WB JEE 2008 | Probability Question 1 | Mathematics

WB JEE 2008

MCQ (Single Correct Answer)

-0.25

A person draws out two balls successively from a bag containing 6 red and 4 white balls. The probability that at least one of them will be red is

$${{78} \over {90}}$$

$${{30} \over {90}}$$

$${{48} \over {90}}$$

$${{12} \over {90}}$$

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 Subjects