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Question: A number is chosen from first 100 natural numbers. The probability that the number is even or divisi...

A number is chosen from first 100 natural numbers. The probability that the number is even or divisible by 5, is

A

34\frac { 3 } { 4 }

B

23\frac { 2 } { 3 }

C

45\frac { 4 } { 5 }

D

35\frac { 3 } { 5 }

Answer

35\frac { 3 } { 5 }

Explanation

Solution

2,4,6,8,10……2,4,6,8,10 \ldots \ldots. i.e., fifty even and ten divisible by 5 like as (10,20,30…...( 10,20,30 \ldots . . .. have been

considered. Hence required probability =50+10100=35= \frac { 50 + 10 } { 100 } = \frac { 3 } { 5 }