## WEEKLY GIVEAWAY PUZZLE (6-11-15):

Arrange the digits 1,2,3,4,5,6,7,8,9 in order from left to right, Β insert + and – as desired to get 79 Β ?

### 9 Responses to “WEEKLY GIVEAWAY PUZZLE (6-11-15):”

1. S Says:

1+2+3+4+5+ 6+7+8+9+1+2+3+4+5+6+7-8+9+1+2-3-4-5+6+7-8+9 =79

2. Mat Says:

123-4+56-7-89

3. ti89guru Says:

Mat , well done. How long did it take you?
I had a different solution in mind.

If anyone can find 10 solutions, that person will also get a free app.

And which app would you like?

4. Mat Says:

1-2+34+56+7-8-9 another one π
It takes 5-10mins π
Huh 10 solutions is possible?
I want to test Calculus with my TI-89 Tit π

5. ti89guru Says:

Sure it is. Write a little program that finds those. Email us At support@ti89.com please.

6. Mat Says:

-1-2+34+56-7+8-9
-12-34+56+78-9
1-2+3-4+5-6-7+89
-1+2-3-4-5-6+7+89
-1+2+3-4-5+67+8+9
-1+2+3+4+5+67+8-9
+1-2+3+4+5+67-8+9
-1+2+3+45+6+7+8+9

I think that’s would be ok? π

7. Mat Says:

1-23+4-5+6+7+89
-1+23-4-5+67+8-9
-1+23+45+6+7+8-9

8. Mat Says:

ti89guru
How you calculate how many possible combination are in this problem? with formul ? π

9. ti89guru Says:

Mat