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A number is chosen randomly from numbers 1 to 60.The probability that the chosen number is a multiple of 2 or 5 is.?


Priyashi Kumari 2nd Jun, 2021
Answer (1)
Palak kumari 2nd Jun, 2021

Hey there,

Hope you are doing well!


Let us suppose A:Number is multiple of 2.

Let us suppose B:number is multiple of 5.


Then,  n(A)=30

n(B)=12

n(A intersection B)=6

=> P(A or  B)=P(A)+P(B)-P(A and B)

=> P(A or B)= 30/60 + 12/60 -6/60

=> P(A or B)=36/60

=> P(A or B)= 3/5 ans.


Hope it helps!

1 Comment
Comments (1)
27th Aug, 2021
How n(A intersection B ) is equal to 6?
Reply

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