Study the given information carefully and ans | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) Total number of marbles $= 4 + 5 + 3 = 12$.Number of ways to draw $2$ marbles out of $12$ is given by $n(S) = {}^{12}C_2 = \frac{12 	imes 11}{2 \

Vedclass · Accepted Answer

None of these

Vedclass · Answer

(D) Total number of marbles $= 4 + 5 + 3 = 12$.Number of ways to draw $2$ marbles out of $12$ is given by $n(S) = {}^{12}C_2 = \frac{12 	imes 11}{2 	imes 1} = 66$.Number of ways to draw $2$ red marbles out of $4$ red marbles is given by $n(E) = {}^{4}C_2 = \frac{4 	imes 3}{2 	imes 1} = 6$.The probability of drawing $2$ red marbles is $P(E) = \frac{n(E)}{n(S)} = \frac{6}{66} = \frac{1}{11}$.Since $\frac{1}{11}$ is not among the given options,the correct answer is 'None of these'.

Study the given information carefully and answer the questions that follow: $A$ basket contains $4$ red,$5$ blue and $3$ green marbles. If $2$ marbles are drawn at random,what is the probability that both are red?

Similar Questions

If a coin is tossed $n$ times,then the probability that the head comes up an odd number of times is:

$A$ man draws a card from a pack of $52$ playing cards,replaces it,and shuffles the pack. He continues this process until he gets a card of spade. The probability that he will fail the first two times is

From a book containing $100$ pages,one page is selected randomly. The probability that the sum of the digits of the page number of the selected page is $11$,is

$2$ dice are thrown. Find the probability of getting $6$ as the product.

Three letters are to be sent to different persons,and addresses on the three envelopes are also written. Without looking at the addresses,the probability that all the letters go into the right envelope is equal to

Vedclass Test Series

Exam Paper Generator

Online Exam Module