Brain Teasers
How Many Numbers?
How many one-digit numbers are there (including zero)?
Hint
Think about ALL the numbers.Answer
19.The numbers are: 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, -1, -2, -3, -4, -5, -6, -7, -8, and -9.
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Comments
What about absolute values?
|-9|, |-8|, |-7|, |-6|, |-5|, |-4|, |-3|, |-2|, |-1|, |0|, |1|, |2|, |3|, |4|, |5|, |6|, |7|, |8|, and |9|
Or factorials:
-9!, -8!,-7!, -6!, -5!, -4!, -3!, -2!, -1!, 0! 1!, 2!, 3!, 4!, 5!, 6!, 7!, 8!, 9!
|-9|, |-8|, |-7|, |-6|, |-5|, |-4|, |-3|, |-2|, |-1|, |0|, |1|, |2|, |3|, |4|, |5|, |6|, |7|, |8|, and |9|
Or factorials:
-9!, -8!,-7!, -6!, -5!, -4!, -3!, -2!, -1!, 0! 1!, 2!, 3!, 4!, 5!, 6!, 7!, 8!, 9!
I got it right! Hmm, I didn't think about that stuff Kiroho said.
Nice! I shouldn't have rushed! should have taken time to think and remember the category too!
Nice! I shouldn't have rushed! should have taken time to think and remember the category too!
Great teaser! Easy and fun!
Cool teaser, I was considering fractions.. Have to take more time...
Fun. I figured since it was in the trick category, you might be throwing in things like pi and other constants.
I said infinity.
I thought, since this was in the trick catagory, that a 'one digit number' may mean 44444.
It only contains the digit 4 so it's a 'one digit number'.
I thought, since this was in the trick catagory, that a 'one digit number' may mean 44444.
It only contains the digit 4 so it's a 'one digit number'.
Nice and Fun.
I got it, but it is really easy.
What about I, V, X, D, C, L, and M?
I was too fast, forgot the negative numbers
yeah i got it right
The hint was really helpful
kwelchans, can u say just 1 positive thing about a teaser? i got it right, i figured trick...so i said 19
i got it! great teaser
I wasn't attempting to be negative. I was just suggesting some alternate answers.
very clever!!!!
loved it!!!
loved it!!!
oh, i said 10
i forgot the negative numbers i just rushed an answer
i forgot the negative numbers i just rushed an answer
Easy
Easy. I got it when I read the hint.
Aw! Tricked! Lol, nice Brain Teaser, it definitly teased my brain...im good at math too!
this is prolly the main reason why I have become an English teacher.
I forgot about the negative numbers...
Got it at the last second!
Got it right!
-1 is in a way 2 digits
12
12
I used .1, .2, .3 ... as well. Good question.
really corny
i guessed 10 0123456789
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