Question

What is the probability of two digit numbers which are divisible by 5?

Answer 1

Answer:

a = 10

d = 5

an = 95

n = ?

an = a + (n-1)d

95 = 10 + (n-1)5

85/5 = n-1

n-1 = 17

n = 18

Thus no. Of observations are 18.

Sp = [two digit no.s ]

E = two digit no.s divisible by 5

P(E) = 18/90

= 6/30

= 2/10

= 1/5

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