Six cards numbered from 1 to 6 are placed in an empty bowl. First one card is drawn and then put back into the bowl; then a second card is drawn. If the cards are drawn at random and if the sum of the numbers on the cards is 4, what is the probability that one of the two cards drawn is numbered 2 ?  Select the correct option
A) 1/3 B) 1/2 C) 1/4 D) 1/5 E) 1/6
(2,2) (3,1) (1,3) – only 3 possible scenarios for sum to be 4.   From this three cases, only one we have 2. So, the probability is 1 chances out of 3 that the one that occurred had 2: P=1/3.   1/3nswer: 1/3.
<result>A</result>
Six cards numbered from 1 to 6 are placed in an empty bowl. First one card is drawn and then put back into the bowl; then a second card is drawn. If the cards are drawn at random and if the sum of the numbers on the cards is 4, what is the probability that one of the two cards drawn is numbered 2 ?