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A bag contains 9 discs of which 4 are red, 3 are blue and 2 are yellow.The discs are similar in shape and size. A disc is drawn at random from the bag.Calculate the probability that it will not be red?

A2/9

B5/9

C4/9

D1/3

Answer:

B. 5/9

Read Explanation:

Total = 9 Red = 4 Blue = 3 Yellow = 2 P{getting red } = 4/9 P[not red} = 1 - P{red} = 1 - 4/9 = 5/9


Related Questions:

Following table shows marks obtained by 40 students. What is the mode of this data ?

Marks obtained

42

36

30

45

50

No. of students

7

10

13

8

2

The mean of 10 observations was calculated as 40. It was detected on rechecking that the value of one observation 45 was wrongly copied as 15. Find the correct mean.