Question

there are 25 number cards numbered from 1 to 25 in a box a card is drawn random. find the probability that the card is ​

Answer 1

Step-by-step explanation:

a)

total outcome = 25

multiple of 3 = 8 ( 3,6,9,12,15,18,21,24)

probability = no. of favourable outcome /total no. of outcomes

== 8/25

b) multipleof 5 = 5 ( 5, 10, 15 20 , 25 )

probability of multiple of 5 is = 5/25

= 1/ 5

c)

Answer 2

A= (1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, `14, 15, 16, 17, 18, 19,20, 21, 22, 23, 24, 25)

n(A)= 25

1) E= getting a multiple of 3

n(E)= 8

PROBABILITY - n(E)/n(A)= 8/25

2) E= getting a multiple of 5

n(E)= 5

PROBABILITY - n(E)/n(A)= 5/25

                                       = 1/5

3)E= getting a multiple of 3 and 5

n(E)= 1

PROBABILITY - n(E)/n(A)= 1/25

hope this helps

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