#71 - Science Murder Riddle

A man was going to bleach his socks because they had gotten muddy the day before. As he was pouring the bleach into the washing machine, he spilled some on the floor. He got some cleaning fluid and mopped it up with a rag. Minutes later he was dead. What killed him?

Science Murder Riddle

When you mix bleach and ammonia [found in most cleaning products] it creates a deadly gas that can kill.

#72 - Good Science Riddle

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

Good Science Riddle

An Echo

#73 - Silly Riddle

Can you name four days which start with the letter 'T'?

Silly Riddle

Tuesday, Thursday, today, and tomorrow!

#74 - November Riddle

A man is sitting in a pub feeling rather poor. He sees the man next to him pull a wad of £50 notes out of his wallet.
He turns to the rich man and says to him,
'I have an amazing talent; I know almost every song that has ever existed.'
The rich man laughs.
The poor man says, 'I am willing to bet you all the money you have in your wallet that I can sing a genuine song with a lady's name of your choice in it.'
The rich man laughs again and says, 'OK, how about my daughter's name, Joanna Armstrong-Miller?'
The rich man goes home poor. The poor man goes home rich.

What song did he sing?

Happy Birthday

#75 - Basic Riddle

The peacock is a bird that does not lay eggs. How do they get baby peacocks

The peahen lays eggs

#76 - World Most Famous Riddle

What came first, the chicken or the egg?

World Most Famous Riddle

Dinosaurs laid eggs long before there were chickens

#77 - Google Interview Riddle

How many times do a clock's hands overlap in a day ?

22 times

am
12:00
1:05
2:11
3:16
4:22
5:27
6:33
7:38
8:44
9:49
10:55

pm
12:00
1:05
2:11
3:16
4:22
5:27
6:33
7:38
8:44
9:49
10:55

#78 - Math Teaser

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

1,2, & 3

1 x 2 x 3 = 6 and 1 + 2 + 3 = 6

#79 - Friday Puzzle Famous Sphinx Riddle

In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travelers who passed by. If the traveler failed to solve the riddle, then the Sphinx killed him/her. And if the traveler answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.

A man, who crawls on all fours as a baby, walks on two legs as an adult, and walks with a cane in old age.

Of course morning, noon, and night are metaphors for the times in a man's (person's) life. Such metaphors are common in riddles. There were two Thebes, apparently this Thebes was the one in Greece. And this Sphinx was apparently not the one at Giza, in Egypt.

#80 - Probability Of Having Same Birthday

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

Only twenty-three people need be in the room, a surprisingly small number. The probability that there will not be two matching birthdays is then, ignoring leap years, 365x364x363x...x343/365 over 23 which is approximately 0.493. this is less than half, and therefore the probability that a pair occurs is greater than 50-50. With as few as fourteen people in the room the chances are better than 50-50 that a pair will have birthdays on the same day or on consecutive days.