Mathematics question.

86JR

86JR

86JR

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This is purely Maths, not IT (bits/bytes).

What is 32*32?

The way I do this in my head is 30*30 = 900, and 2*2 = 4. Therefore answer is 904.

However the answer is actually 1024.

This confuses me entirely. I thought I was good at Mathematics.

:confused::confused::confused:
 
If one were to break it down like you do at school:

30 x 32 +
2 x 32

etc

32 x
32

Do the 2 x 32 1st then add a zero to the line below the 3 x 32 add the result in front of the zero then add those two together etc.
 
Xordium said:
If one were to break it down like you do at school:

30 x 32 +
2 x 32

etc

32 x
32

Do the 2 x 32 1st then add a zero to the line below the 3 x 32 add the result in front of the zero then add those two together etc.
Click to expand...

In my head I'd have broken it down to:

10 x 32 +
10 x 32 +
10 x 32 +
2 x 32

But I suck at mental arithmetic. :)
 
Damn, this is looking like one of those threads isn't it?

But hey the last time I was at school was in 2001 Maths related.

No wonder I struggled at Bsc Comp Sci Maths!
 
As someone else pointed out, even as a not-very-brilliant-mental-mathematician, 10*32 being 320 should start some bells ringing. Clearly not going to be 904 when you times it by 3 and then do another couple of 32s :p
 
facepalm_zpsd0e5de54.jpg~original
 
Think of it this way


(A + B) * (A + B) = A^2 + 2AB + B^2

Therefore

32 * 32 =(30 + 2) *(30 + 2)= 30^2 + 2( 30*2) + 2^2 = 900 + 120 + 4 = 1024

Simples! :D

You missed out the 2AB! ;)

(There are no Dumb questions, Only Dumb answers!)
 
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