cards marked between 2 and 101are placed in a box and mixed thoroughly one card is drawn from the box . find the probability that number on the card is
a)an even no
b) a no. <50
c) a no. which is non perfect square
d) an even no.
Answers
Answer:
Step-by-step explanation:
(i)s=( 2,3,4......101)
n(s)=100
1 event is even no i.e., event A
A =(2,4,6....8)
N(A) = 50
P(A)=N(A)
N(S)
=50÷100
=1/2
(ii)total favourable outcomes = 49
so probabilty = 49/100
(iii)(s) = {2,3,5,6,7,8,10,11,12,13,14,15,17,18,19,20,21,22,23,24,26,27,28,29,30,31,32,
33,34,35,37,38,39,40,41,42,43,44,45,46,47,48,50,51,52,53,54,55,56,57,58,59,60,61,62,63,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,101} are non perfect squares.
n(S) = 90
probability = n(S)/total possible outcome = 90/100 = 9/10
(iv) (i)s=( 2,3,4......101)
n(s)=100
1 event is even no i.e., event A
A =(2,4,6....8)
N(A) = 50
P(A)=N(A)
N(S)
=50÷100
=1/2
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