Brain Teasers
10,000 - 9,999...
Can you solve this?
10,000 - 9,999 + 9,998 - 9,997...
...5 + 4 - 3 + 2 - 1 = ?
10,000 - 9,999 + 9,998 - 9,997...
...5 + 4 - 3 + 2 - 1 = ?
Answer
The answer is 5,000. If you noticed, each consecutive pair, starting with the 1st two equals one and it happens in the progression, 5,000 times.Hide Answer Show Answer
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Comments
total difference = amount of numbers/the amount of numbers in each repetition * the difference in each repetition
x = 10 000 / 2 * 1
= 5000
That's how my mind works at least.
x = 10 000 / 2 * 1
= 5000
That's how my mind works at least.
exactly how i did it. cool, but too easy
I almost did it the hard way but it takes too long.
kinda easy but good teaser
I got it immediately! I'm used to these "trick" math questions though, after seeing them numerous times. Nice teaser!
I thought it was one, hee hee.
surprisingly, that was fairly easy!
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