Question

the last digit of a telephone number can be any of the digits, 0,1,2,3,4,5,6,7,8 or 9. find the probability that last digit is (i)5, (ii)odd,(iii)greater than 7,(iv)a natural number​

Answer 1

Answer:

total no. of outcomes= 10

i) 5

possible outcomes= 5

p(a)=1/10

ii) odd

possible outcomes= 1,3,5,7,9

p(a)=5/10 = 1/2

iii) greater than 7

possible outcomes= 8,9

p(a)=2/10= 1/5

iv) a natural no.

possible outcomes= 1,2,3,4,5,6,7,8,9

p(a)=9/10

hope it helps .....^_^

Answer 2

Answer:

• 1/10
• 1/2
• 9/10

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