Numbers 1 to 20 are written on twenty separate slips (one number on one slip) kept
in a box and mixed well. One slip is chosen from the box without looking into it.
What is the probability of getting
(a) number 7
(b) a number less than 15?
(c) a number greater than 8?
(d) a 2-digit number?
(e) a composite number?
(f) a multiple of 5
Answers
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Step-by-step explanation:
a.
no. of chits =20
no. of favourable chit =7
p( getting no. 7 chit)= 1/20
b. 15/20 = 3/4
c. 12/20=6/5
d.10/20= 1/2
f. 4/20= 1/5
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