A jar contains 10 red marbles numbered 1 to 10 and 2 blue marbles numbered 1 to

Question

A jar contains 10 red marbles numbered 1 to 10 and 2 blue marbles numbered 1 to 2. A marble is drawn at random from the jar. Find the probability of the given event.

(a) The marble is red
Your answer is :     

(b) The marble is odd-numbered
Your answer is :     

(c) The marble is red or odd-numbered
Your answer is :     

(d) The marble is blue or even-numbered
Your answer is :

A jar contains 10 red marbles numbered 1 to 10 and 2 blue marbles numbered 1 to 2. A marble is drawn at random from the jar. Find the probability of the given event. (a) The marble is red Your answer is Preview (b) The marble is odd-numbered Your answer is: Preview (c) The marble is red or odd-numbered Your answer is Preview (d) The marble is blue or even-numbered Your answer is Preview

Explanation / Answer

a)probabilty =10/12 =5/6

b) probability =6/12 =1/2 (as there are 6 odd numbered and 6 even numbered marble)

c)probability =11/12

d)probability =8/12 =2/3 (as six even numbered red marble and 2 blue marble hence 6 favourable outcome)

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