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# Subtraction

64 replies to this topic

### #61 Trogdor

Trogdor

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Posted 31 July 2008 - 09:16 PM

WARNING: the following answer is one of those "nitpicky" type answers, but I'm really just trying to inject some humor.

Several people have suggested that the answer is infinite because you can subtract 2 from 32 once (32-2 = 30), and then you can do it again (32-2=30), and then you can do it again...as many times as you want.

There's a flaw in this though - the question asks how many times YOU can subtract 2 from 32. It takes a discreet amount of time to do that calculation, although it is pretty quick. Given that the action takes a discreet amount of time, and YOU will only live for discreet amount of time, there is a limit to the number of times that YOU can subtract 2 from 32.

Assuming that a person devotes the rest of their life to doing just this:
It takes me about 2.5 seconds to say "thirty two minus two equals thirty" at a normal pace, but if you are a speed talker, or if you're doing it in your head, you can certainly do it faster. Even it's 1 second per transaction, it's unlikely that you'll live to be more than 150 years old, and anyone reading this riddle has to be at least 3 years old to actually be able to read it, so:
(150-3)years x 365.25days x 24hours x 60minutes x 60 seconds = 4,638,967,200 times.

So my answer to the question: roughly 4.5 billion times.

You totally sucked the fun out of it..., but it was a fun answer
• 0

### #62 Isabella@101

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Posted 07 August 2008 - 06:41 PM

well
its pretty easy.
i mean come on
a two myear old could figure that out

duhhh!!!
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### #63 Isabella@101

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Posted 07 August 2008 - 06:45 PM

well
its pretty easy.
i mean come on
a two myear old could figure that out

duhhh!!!

and if you got the answer wrong
you need to go back to the 1st grade
uhhhh....... yeah
• 0

### #64 Janak

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Posted 06 September 2008 - 10:04 AM

This one is for the people who can sit for the rest of their lives writing any series of digits and still the answer would cease to exist... thats why its called INFINITY
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### #65 sykotic

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Posted 24 September 2008 - 04:29 PM

zero times

the question is how many times can "YOU" subtract....... etc etc

in my case it is zero times

i am lousy at arithmetic
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