When is 0 / 0 =1 ? : Solution Posted

[Guest]

When can the following be true?

0 / 0 = 1

Yes, read as zero divided by zero equals one!

No Tens, unit, magic.. blah blah! guess enuff hint for now

Finally the solution:

dBm is a unit to measure absolute Power, x dBm = 10* log(X^10e+3), where X is power in Watts.

Thus, 1 mw (milli Watt) = 10e-3 W = 10 * log(1) dBm = 0 dBm

Now, 0 (in dBm) / 0 (in dBm) = 1 (but Obvious)

So fellas, spot any fallacies?

Gee, should acknowledge some guy in SD for some funny questions on dBm scale which led to this q. Me thinks it makes cracker of a q

[Guest]

a = 1

a = b

a^2 = ab

a^2 - b^2 = ab - b^2

(a+B.) (a-B.) = b(a-B.)

divide through by a-b

(a+B.) = b

a + b -1 = b-1

1 + 1 - 1 = 1-1

1 = 0

so

0/0 = 1

is the same as

0/1 = 0

and therefore the answer is always.

You said A^2 = AB. But then in the bold , you changed A^2 = ( AB) to A^2 = (A+B)

Why ?

[bonanova]

You said A^2 = AB. But then in the bold , you changed A^2 = ( AB) to A^2 = (A+B)

Why ?

Not exactly...

A²-B² was changed to (A+B)(A-B)

[Guest]

a = 1

a = b

a^2 = ab

a^2 - b^2 = ab - b^2

(a+B.) (a-B.) = b(a-B.)

divide through by a-b

(a+B.) = b

a + b -1 = b-1

1 + 1 - 1 = 1-1

1 = 0

so

0/0 = 1

is the same as

0/1 = 0

and therefore the answer is always.

Can't divide by 0. if a=b then a-b = 0

Edited March 6, 2009 by tonski

[Guest]

The original works but necessitates converting dBm to W prior to division in which case 0dBm/0dBm!=1dBm, (0dBm)/(0dBm)=1 mW (or .001).

Just noticed this thread was from last year. Congrats to myself for my first post bringing up old stuff (lol).

Edited March 6, 2009 by tonski

[Guest]

When is 0 / 0 =1 ?

When 0=x

that way x/x=1

[Guest]

It's alright Tonski, my iGoogle homepage app thingy says this is a 'new puzzle'

Here's my two cents anyway

This requires a bit imagination so here goes...

What if you were an astronaut and you landed on an alien planet where 0 was a symbol that represented a number, k to us, and k is not equal to OUR VERSION of 0?