Math fail or out of the box answer.

[akshayxyz]

I see both the examinee and examiner are right - can you guess the non-obvious correct answer?

[punjabi_khota]

:hmmmm2: How is examiner right (assuming the pic of the wood is correct) ?

[gaurav92]

Actually both are right.

[Aaku]

wrong, its 20 :protest:

[gaurav92]

:hmmmm2: How is examiner right (assuming the pic of the wood is correct) ?

It can be 15 mins too if you cut one of the halves into two and make it three.

[Aaku]

It can be 15 mins too if you cut one of the halves into two and make it three.

kuch bhi ?

[gaurav92]

^Under the assumption that the board is a square :--D

[Aaku]

^Under the assumption that the board is a square :--D

jab pic hai, why do you have to assume its a square board ? :facepalm: kese kese log CA bann jaate hai

[gaurav92]

Ohh didn't see that pic there :(( Then its definitely 20.

[Rajiv]

Answer is less than 1 = use electric

[DomainK]

Two pieces = one cut Three pieces = two cuts. How tough is that?

[gaurav92]

^And still the math prof got that wrong :hehe:

[Stuge]

@teacher :facepalm:

[akshayxyz]

With little bit of more math, and precision cutting (without compromising on speed), one can get 3 pieces in 15 minutes.

btw, if there was no picture, then the question becomes even more open ended.

[J P K]

how about this ?

[zen]

if Marie has a saw in each hand, she could make 2 cuts (3 pieces) in the same time (10 mins) :dontknow:

[ganeshran]

Doesnt say that its 3 equal pieces.

[akshayxyz]

Doesnt say that its 3 equal pieces.

this. And this means times less than 10 minutes are also possible.

[akshayxyz]

how about this ?

How about this. [ i = sqrt(-1) ] See whether you can figure out the fallacy here :)

[ganeshran]

how about this ?

a2 - b2 = (a+b)(a-b) is valid only when a is not equal to b.