Is the following equation true or false?
81 x 9 = 801
Without adding any numbers or symbols (i.e. you can only rearrange the numerals and multiplication sign keeping them on the same side of the equal sign), make the equation true?
:D
81 x 9 = 801
Without adding any numbers or symbols (i.e. you can only rearrange the numerals and multiplication sign keeping them on the same side of the equal sign), make the equation true?
:D
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Possibilities to make: - 801
- 810
- 081
- 018
- 108
- 180
81*9 = 729
18*9 = 162
19*8 = 152
91*8 = 728
1*89 = 89
1*98 = 98
*198 = 198
*189 = 189
*918 = 918
*981 = 981
*819 = 819
*891 = 891
unless you can use the number we were given twice, then it still looks like it's false, but if we can use the numbers we already have then: 89 times 9 is 801
OR
paper is upside down and it really says 108 = 6 x 18
- 810
- 081
- 018
- 108
- 180
81*9 = 729
18*9 = 162
19*8 = 152
91*8 = 728
1*89 = 89
1*98 = 98
*198 = 198
*189 = 189
*918 = 918
*981 = 981
*819 = 819
*891 = 891
unless you can use the number we were given twice, then it still looks like it's false, but if we can use the numbers we already have then: 89 times 9 is 801
OR
paper is upside down and it really says 108 = 6 x 18
-
Flip "81 x 9" upside down, and it becomes "6 x 18".
Flip "801" upside down, and it becomes "108".
6 x 18 = 108 is true.
Flip "801" upside down, and it becomes "108".
6 x 18 = 108 is true.
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rotate the problem vertically: 108 = 9 x 18
invert each number: 108 = 6 x 18
Then it would be true.
invert each number: 108 = 6 x 18
Then it would be true.
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Turn you monitor upside down and read again the equation.
108 = 6 x 18
108 = 6 x 18
-
turn the equation upside down :P
108 = 6 x 18
108 = 6 x 18
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False
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81 x 9 = 801
Please tell us what is the trick in the above????
I am unable to figyre it out.............
Please tell us what is the trick in the above????
I am unable to figyre it out.............