Question

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Answer 1

Step-by-step explanation:

a) No. of 2 digit no. between 1 to 100 = 45

Probability = No. of favourable outcomes/ No. of total outcomes

45/100 = 9/20

b) No. of all perfect square nos = 10

Probability = No. of favourable outcomes/ No. of total outcomes

10/100= 1/10

c) No. of all prime no. s = 25

Probability = No. of favourable outcomes/ No. of total outcomes

25/100=1/4

d) No. of multiples of 5 and 10 both = 10

Probability = No. of favourable outcomes/ No. of total outcomes

10/100= 1/10

e) Factors of 10 and 20 both= 4

Probability = No. of favourable outcomes/ No. of total outcomes

4/100= 1/25

f) no. more than 6 but less than 90 = 83

Probability = No. of favourable outcomes/ No. of total outcomes

83/100

Answer 2

Answer:

a)9/20

B)1/10

C)1/4

D)1/5

e)3/50

f)83/100

Step-by-step explanation:

Total outcomes=100

a) favourable outcomes for all 2-digit odd numbers=11,13,15,17,19,21,23,25,27,29

...99

Favourable outcomes=45

Probability =45/100=9/20

B) All perfect square numbers:1,4,9,16,25,36,49,64,81,100

Favourable outcomes=10

Probability =10/100=1/10

C) All prime numbers:2,3,5,7,11,13,17,19,23,29,31,37,41,43,53,59,61,67,71,73,79,83,87,89,97

Favourable outcomes=25

Probability =25/100=1/4

D) Multiple of 5 and 10

5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100

Favourable outcomes=20

Probability =20/100=1/5

e)factors of 10 and 20

1,2,4,5,10,20

Favourable outcomes=6

Probability =6/100=3/50

f) Number more than 6 but less than 90

7,8,9,10... 89

Favourable outcomes=83

Probability =83/100

Hope it helps you.