Question

Number from 1 to 49 are printed on tennis ball and mixed by a Machine. If one ball is drawn at random what is the probability of
1) an even number
2)a positive number
3)number divisible by 10
4)Number greater than 50
5) multiples of 5 and 7

1

Answer 1

(1) An even number

Total numbers = 1 to 49 (49)

Even numbers = 24

Probability = 24/49

(2) A positive number

Total numbers = 1 to 49 (49)

Positive numbers = 1 to 49 (49)

Probability = 49/49

= 1 (100%)

(3) number divisible by 10

Total numbers = 1 to 49 (49)

number divisible by 10 = 10,20,30,40 (4)

Probability = 4/49

(4) Number greater than 50

Total numbers = 1 to 49 (49)

Number greater than 50 = 0

Probability = 0/49

= 0

(5) multiples of 5 and 7

Total numbers = 1 to 49 (49)

multiples of 5 and 7 = 35 (1)

Probability = 1/49