Question

Cards are drawn at random from a pack of 250 cards numbered from 1 to 200. Find the probability of getting a number which is perfectly cube

Answer 1

Since the cards are numbered 1 to 200
We have,
For a perfect cube we have
${x}^{1 \div 3} = y$
where y belongs to real numbers
No. of perfect cubic roots=1,8,27,64,125
Probability=5/200
=1/40.Answer