Question

a box contains 90 discs whcich are numbered from 1 to 90 if one disc is drawn at random from the box find prob that it is 2 digital no.
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Answer 1

Answer:

$\frac{81}{90}$

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Answer 2

Answer:

1/90

Step-by-step explanation:

probability is 1/90

no of disc having number 2 is only 1

total number of discs are 90

1/90