Question

7. Prime numbers between 1 and 25 are written on identical slips, put in a box and mixed well. If a slip is drawn at random, what is the probability of getting? (a) One digit number (b) an even number (c) an odd number (d) no: greater than 11

Answer 1

Step-by-step explanation:

probability of an outcome = n.o of favorable outcomes / total n.o of outcomes

total n.o of prime n.os between 1 and 25 = 9

(a) one digit prime n.os = 2, 3 , 5, 7

probability= 4 / 9

(b) even prime n.o = only 2

probability =1 /9

(c) odd n.o =all except 2

probability = 8/9

d) n.o greater than 11 = 13 , 17 , 19 , 23

probability = 4/9

Answer 2

Answer:

a)no of one digit b/w 1-25==9

p(one digit) 9/25

b)even no=12

p(even)12/25

c)p(odd) 1-p(even)

=13/25

d)great than 12 =13

p(12+) 13/25

Step-by-step explanation:

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