A few days ago
See if you can answers this tough question…?
Two card are on a table. A 12 is written on one of the cards and a 9 on the other. Each card also has a number written on its back. By turning over one or both or neither of the cards and adding the two numbers showing, you can get each of these sums: 15, 16, 20, and 21. What number is written on the back of each card?
Top 10 Answers
A few days ago
Favorite Answer
12+9=21
11+9=20
12+4=16
11+4=15
12 on the front 11 on the back
9 on the front 4 on the back.
….OR….
12+9=21
12+8=20
7+9=16
7+8=15
12 on the front 7 on the back.
9 on the front 8 on the back.
peace ♥ happiness
0
A few days ago
The 9 card has 8 and
the 12 card has 7.
3
A few days ago
11 is on the back of the card that says 12
4 is on the back of the card that says 9
who gave me a thumbs down? the numbers work…12 and 4 is 16, 11 and 4 is 15, 9 and 11 is 20 and 12 and 9 are 21!
2
A few days ago
3 and 4?
0
A few days ago
The 9 card has 6
The 12 card has 9
or
The 9 card has 7
The 12 card has 8
0
A few days ago
Double ditto with Molly.
0
A few days ago
Yeppers… I have an 8 & 7 to get those 🙂 That was fun!!
1
A few days ago
I really do not know! Im only in 6th grade!
0
A few days ago
i agree with molly
0
A few days ago
what
0
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