Question

4. Numbers from 1 to 20 are written on 20 separate slips. The slips are put into a
box and mixed thoroughly. One slip is drawn from the box randomly. What is
the probability of
(i) drawing an even number?
(ii) drawing a prime number?
(iii) drawing a number greater than 15?
(iv) drawing a 2-digit number?
(v) drawing a number which is a multiple of 10?​

Answer 1

Numbers from 1 to 20 are written on 20 separate slips. The slips are put into a box and mixed thoroughly. One slip is drawn from the box randomly.

What is the probability of

i) Drawing an even number

➟ Total outcomes = 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20

➟ Favourable outcomes = 2,4,6,8,10,12,14,16,18,20

➟ Probability = Favourable outcomes/Total outcomes

➟ 10/20

➟ 1/2

ii) Drawing a prime number

➟ Total outcomes = 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20

➟ Favourable outcomes = 2,3,5,7,11,13,17,19

➟ Probability = Favourable outcomes/Total outcomes

➟ 8/20

➟ 2/5

iii) Drawing a number greater than 15

➟ Total outcomes = 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20

➟ Favourable outcomes = 16,17,18,19,20

➟ Probability = Favourable outcomes/Total outcomes

➟ 5/20

➟ 1/4

iv) Drawing a two digit number

➟ Total outcomes = 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20

➟ Favourable outcomes = 10,11,12,13,14,15,16,17,18,19,20

➟ Probability = Favourable outcomes/Total outcomes

➟ 11/20

v) Drawing a number which is a multiple of 10

➟ Total outcomes = 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20

➟ Favourable outcomes = 10,20

➟ Probability = Favourable outcomes/Total outcomes

➟ 2/20

➟ 1/10

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Answer 2

Answer:

this is the answer

Step-by-step explanation:

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