cards marked with numbers 13,14,15....60, placed in a box and mixed thoroughly.one carf is drawn at random from the box.find the probabilitu that number on the card drawn is divisible by 5 a perfect square
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Answered by
39
Total no. of outcomes =
Using AP.,
a=12 d=1 an= 60
an = a + (n-1)d
60 =13 + (n-1)1
60= 13 + n - 1
60 - 12 =n
48 = n
(a) Favourable outcomes = 15, 20, 25, 30, 35, 40, 45, 50, 55 and 60
= 10
Therefore, P(E) = 10/48 = 5/24
(b) Is a perfect square = 16,25, 36 and 49 =3
Therefore P(E) = 3/48 = 1/18
Hope this was helpful :))
Using AP.,
a=12 d=1 an= 60
an = a + (n-1)d
60 =13 + (n-1)1
60= 13 + n - 1
60 - 12 =n
48 = n
(a) Favourable outcomes = 15, 20, 25, 30, 35, 40, 45, 50, 55 and 60
= 10
Therefore, P(E) = 10/48 = 5/24
(b) Is a perfect square = 16,25, 36 and 49 =3
Therefore P(E) = 3/48 = 1/18
Hope this was helpful :))
Answered by
9
ii. There r 4 perfect square no., 16,25,36,49 so probability =4/48=1/12
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