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Subtraction


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64 replies to this topic

#1 rookie1ja

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Posted 31 March 2007 - 11:06 AM

Subtraction - Back to the River Crossing Puzzles
How many times can you subtract the number 2 from the number 32?

This old topic is locked since it was answered many times. You can check solution in the Spoiler below.
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#2 global_cooler

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Posted 24 April 2007 - 09:08 AM

ha...
ha...
good one.
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#3 Grujah

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Posted 27 April 2007 - 03:38 PM

Well, you can subtract 2 from 32 as many times as you want.
32 - 2 = 30 (first time)
32 - 2 = 30 (second time)

and so on...
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#4 pranavojha

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Posted 24 May 2007 - 02:01 PM

hehehe....
even more funny!!
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#5 strikefiend

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Posted 14 June 2007 - 07:49 PM

My answer is once, because "32" without the "2" would be "3" and you can't remove a "2" from a "3".
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#6 harvey45

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Posted 21 June 2007 - 08:34 PM

If you only want to work w/ positive #s, 2 can be substracted frrom 32 16 times till you get to 0:
30, 28, 26, 24, 22, 20, 18, 16, 14, 12, 10, 8, 6, 4, 2, 0

Otherwise you can subtract 2 from 32 an unlimited # of times. Just go into negatives:
10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10
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#7 larryhl

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Posted 21 June 2007 - 09:13 PM

If you only want to work w/ positive #s, 2 can be substracted frrom 32 16 times till you get to 0:
30, 28, 26, 24, 22, 20, 18, 16, 14, 12, 10, 8, 6, 4, 2, 0

Otherwise you can subtract 2 from 32 an unlimited # of times. Just go into negatives:
10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10



You don't seem to get the gist of the riddle. It's not a math problem. You can only subtract 2 from 32 once because after that you are subtracting 2 from a number that isn't 32.
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#8 rofel_2612

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Posted 26 June 2007 - 09:52 AM

I Agree with Grujah.
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#9 Camshaft

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Posted 03 July 2007 - 07:04 PM

Infinite

32-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2...
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#10 mathemagister

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Posted 06 July 2007 - 10:46 AM

That reminds me of these riddles:
How many cookies can you eat with an empty stomach? 1!
How many books can fit in an empty schoolbag? 1!
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