8/18/2019 Crazy Puzzles

1/5

Interesting Questions1. Crossing The Bridge

Ans: All can cross the bridge. A – 1 minute, B – 2 minutes, C – 5 minutes, D – 10

minutes

• A & B go, B returns = 2 + 2 = 4 minutes

• C & D go, A returns = 10 + 1 = 11 minutes 15 minutes tot!"#

• A & B go = 2 minutes 1$ minutes#

8/18/2019 Crazy Puzzles

2/5

2. %!nho"e Coers

Ans: A round manhole cover cannot fall through its circular opening, whereas a

square manhole cover may fall in if it were inserted diagonally in the hole.

8/18/2019 Crazy Puzzles

3/5

'. The Che!ting (us)!nd

Ans:

If there is only 1 cheating husband, 99 wives would know of his identity. Only thecheaters wife would not know. !ince she doesnt report, no one dies and she

reali"es that it is her husband.

If there are # cheating husbands, 9$ wives would know of their identity. Only the

cheaters wives would not know. If dont report, no one dies and they reali"e that it

is their husbands.

8/18/2019 Crazy Puzzles

4/5

!imilarly for 1%% cheating husbands, all would eventually come to know. And hence,

all husbands die eventually.

8/18/2019 Crazy Puzzles

5/5

4. Ang"e !t '*15

Ans:

&eviation from the marker '( on the clock) *or +he our and) (-% degrees in 1#

hours. (% degrees in 1 hour -% minutes/. +hus 0. degrees in 1 minutes.