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this question is from a princeton test CD-Rom and unfortunately they don't explain the answers.
DS
10 slips of paper numbered 1-10 are placed in a bag.
if 3 slips are chosen at random and one is the number 7, what is the sum of the numbers on the 3 slips?
(1) The sum of two of the numbers is 16
(2) The sum of two of the numbers is 14
I think the answer is E. But they say the answer is B.
help please!
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this question is from a princeton test CD-Rom and unfortunately they don't explain the answers.
DS 10 slips of paper numbered 1-10 are placed in a bag. if 3 slips are chosen at random and one is the number 7, what is the sum of the numbers on the 3 slips?
(1) The sum of two of the numbers is 16 (2) The sum of two of the numbers is 14
I think the answer is E. But they say the answer is B. help please!
Show more
st1
A+B = 16, could potentially be (10+6)
7+A = 16, A = 9, but what is B? what is the total sum?
7+B = 16, B = 9, but what is A? what is the total sum?
st2
A+B = 14
7+A = 14, this means that A=7, but can not because numbered 1-10
7+B = 14, this means that B=7, but can not because numbered 1-10
therefore, A+B=10+4 or vise versa, either way, sum will equal to 21.
B
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.