SOLUTION: A box contains ten balls numbered from 1 to 10. If you pick two balls at random, what is the probability that the sum of the numbers on the two balls is even?
(a) 1/2 (b) 47/99 (c
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-> SOLUTION: A box contains ten balls numbered from 1 to 10. If you pick two balls at random, what is the probability that the sum of the numbers on the two balls is even?
(a) 1/2 (b) 47/99 (c
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Question 322927: A box contains ten balls numbered from 1 to 10. If you pick two balls at random, what is the probability that the sum of the numbers on the two balls is even?
(a) 1/2 (b) 47/99 (c) 45/99 (d) 4/ 9 (e) 2/10
You can put this solution on YOUR website! 4/9.
Both balls must be even, or both odd.
The 1st ball doesn't matter, but the 2nd has to match. There are 4 that match out of 9.
