Originally posted by UncleAdamIt's a pretty straightforward calculation. If you think of multiplying by hand, you'll end up adding stacks of ones. Each stack will have progressively more ones until the center, which has 9 (the number of ones in your two original numbers) and so you'll see that pattern.
did you know that
111111111 X 111111111 = 12345678987654320
i thought i was kinda interesting.
PS i not sure if it belongs here but it didnt seem like it should go in the general fourm so i put it here
Originally posted by UncleAdamI wouldn't rush to call the calculator defective, but it certainly may not be precise enough to display such a large number correctly.
nope, thats the way it came out on the calculator.
My Microsoft Excel gives 12345678987654300 as the answer. The last two digits are suspect when the question was 111111111 * 111111111.
The ancient art of handwritten math (!) would quickly show you that your calculator is not telling the full story:
111111111
x 111111111
-------------
111111111
1111111110 ... STOP
Every line after this will have at least one placeholder zero, so the least significant digit will remain 1!
Originally posted by TheMaster37I agree with you, but apparently Bill Gates disagrees, as Excel does give the answer of: 12345678987654300. I was tuaght in school that any number ending 1 times any number ending in 1 gave a product ending in 1. But Bill Gates must be right - he couldn't possibly have gotten so stinking rich by being wrong... ..could he? 😉
*cough* something ending in a 1 multiplied with something ending in a 1 ends in a 1. It's as simple as that 🙂