Question

A box contains discs which are numbered from 5 to 80. If one disc is drawn at random from

the box, find the probability that it bears (i) a two-digit number​

Answer 1

Step-by-step explanation:

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Total number of discs in the box =80

Perfect squares from 1 to 80=1,4,9,16,25,36,49 and 64.

Possible outcomes =8

Probability is given by,

P(A)=No. of total outcomesno. of possible outcomes

P ( getting a number which is a perfect square )=808=101.

Answer 2

Answer:

A box contains discs which are numbered from 5 to 80. If one disc is drawn at random from

the box, find the probability that it bears (i) a two-digit number