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## 0a Riddles To Solve

## Solving 0a Riddles

Here we've provide a compiled a list of the best 0a puzzles and riddles to solve we could find.Our team works hard to help you piece fun ideas together to develop riddles based on different topics. Whether it's a class activity for school, event, scavenger hunt, puzzle assignment, your personal project or just fun in general our database serve as a tool to help you get started.

Here's a list of related tags to browse: Math Brain Teasers Number Riddles Number Riddles Math Brain Teasers Brain Teasers Mind Trick Questions Hard Brain Teasers Number Riddles Math Brain Teasers

The results compiled are acquired by taking your search

**"0a"**and breaking it down to search through our database for relevant content.

__Browse the list below:__

## 20 Plus 20 Plus 20 Riddle

Hint:

## You Start With 1000 Riddle

You start with 1000 then add 40 add another 1000 then add 30 add another 1000 then add 20 add one more 1000 then add 10 what is your answer?

Hint:

If you said 5000 you're wrong! The answer is 4100, how?

1000 + 40 = 1040

1040 + 1000 + 30 = 2070

2070 + 1000 + 20 = 3090

3090 + 1000 = 4090

4090 + 10 = 4100

YES NO

1000 + 40 = 1040

1040 + 1000 + 30 = 2070

2070 + 1000 + 20 = 3090

3090 + 1000 = 4090

4090 + 10 = 4100

*Did you answer this riddle correctly?*YES NO

## A Sudden Knock On The Door Riddle

7.00am. You are asleep and there is a sudden knock on the door. Behind the door are your parents, who came to have breakfast. In your fridge: bread, milk(pasteurized), juice and a jar of jam. What will you open first?

Hint:

## A Dash At 20 And A Dot At 60

Hint: It's not a clock.

## Steals $100 Riddle

Hint:

## In 1990 A Person Is 15 Years Old Riddle

Hint:

The years are in B.C (Before Christ).

Thus, 1990 in BC will gives 15 years old and 1995 in BC will gives 10 years old.

YES NO

Thus, 1990 in BC will gives 15 years old and 1995 in BC will gives 10 years old.

*Did you answer this riddle correctly?*YES NO

## Can You Solve The Horse Sale Brain Teaser?

A man buys a horse for $60, then sells it for $70. He buys the horse back for $80, and then sells the horse for $90.

How much money did he make or lose?

Did he break even?

How much money did he make or lose?

Did he break even?

Hint: He didn't break even.

## 1500 Plus 20 And 1600 Minus 40 Riddle

Hint:

## The Coin Toss Riddle

You are in a bar having a drink with an old friend when he proposes a wager.

"Want to play a game?" he asks.

"Sure, why not?" you reply.

"Ok, here's how it works. You choose three possible outcomes of a coin toss, either HHH, TTT, HHT or whatever. I will do likewise. I will then start flipping the coin continuously until either one of our combinations comes up. The person whose combination comes up first is the winner. And to prove I'm not the cheating little weasel you're always making me out to be, I'll even let you go first so you have more combinations to choose from. So how about it? Is $10.00 a fair bet?"

You know that your friend is a skilled trickster and usually has a trick or two up his sleeve but maybe he's being honest this time. Maybe this is a fair bet. While you try and think of which combination is most likely to come up first, you suddenly hit upon a strategy which will be immensely beneficial to you. What is it?

"Want to play a game?" he asks.

"Sure, why not?" you reply.

"Ok, here's how it works. You choose three possible outcomes of a coin toss, either HHH, TTT, HHT or whatever. I will do likewise. I will then start flipping the coin continuously until either one of our combinations comes up. The person whose combination comes up first is the winner. And to prove I'm not the cheating little weasel you're always making me out to be, I'll even let you go first so you have more combinations to choose from. So how about it? Is $10.00 a fair bet?"

You know that your friend is a skilled trickster and usually has a trick or two up his sleeve but maybe he's being honest this time. Maybe this is a fair bet. While you try and think of which combination is most likely to come up first, you suddenly hit upon a strategy which will be immensely beneficial to you. What is it?

Hint: Think what would be most likely to happen if you chose HHH, would this be a good decision?

The answer is to let your friend go first. This puzzle is based on an old game/scam called Penny Ante. No matter what you picked, your friend would be able to come up with a combination which would be more likely to beat yours. For example, if you were to choose HHH, then unless HHH was the first combination to come up you would eventually lose since as soon as a Tails came up, the combination THH would inevitably come up before HHH. The basic formula you can use for working out which combination you should choose is as follows. Simply take his combination (eg. HHT) take the last term in his combination, put it at the front (in this case making THH) and your combination will be more likely to come up first. Try it on your friends!

YES NO

*Did you answer this riddle correctly?*YES NO

## 100 Blank Cards Riddle

Someone offers you the following deal:

There is a deck of 100 initially blank cards. The dealer is allowed to write ANY positive integer, one per card, leaving none blank. You are then asked to turn over as many cards as you wish. If the last card you turn over is the highest in the deck, you win; otherwise, you lose.

Winning grants you $50, and losing costs you only the $10 you paid to play.

Would you accept this challenge?

There is a deck of 100 initially blank cards. The dealer is allowed to write ANY positive integer, one per card, leaving none blank. You are then asked to turn over as many cards as you wish. If the last card you turn over is the highest in the deck, you win; otherwise, you lose.

Winning grants you $50, and losing costs you only the $10 you paid to play.

Would you accept this challenge?

Hint: Perhaps thinking in terms of one deck is the wrong approach.

Yes!

A sample strategy:

Divide the deck in half and turn over all lower 50 cards, setting aside the highest number you find. Then turn over the other 50 cards, one by one, until you reach a number that is higher than the card you set aside: this is your chosen "high card."

Now, there is a 50% chance that the highest card is contained in the top 50 cards (it is or it isn't), and a 50% chance that the second-highest card is contained in the lower 50. Combining the probabilities, you have a 25% chance of constructing the above situation (in which you win every time).

This means that you'll lose three out of four games, but for every four games played, you pay $40 while you win one game and $50. Your net profit every four games is $10.

Obviously, you have to have at least $40 to start in order to apply this strategy effectively.

YES NO

A sample strategy:

Divide the deck in half and turn over all lower 50 cards, setting aside the highest number you find. Then turn over the other 50 cards, one by one, until you reach a number that is higher than the card you set aside: this is your chosen "high card."

Now, there is a 50% chance that the highest card is contained in the top 50 cards (it is or it isn't), and a 50% chance that the second-highest card is contained in the lower 50. Combining the probabilities, you have a 25% chance of constructing the above situation (in which you win every time).

This means that you'll lose three out of four games, but for every four games played, you pay $40 while you win one game and $50. Your net profit every four games is $10.

Obviously, you have to have at least $40 to start in order to apply this strategy effectively.

*Did you answer this riddle correctly?*YES NO

## Dropping Coconuts Riddle

You have two coconuts and you want to find out how high they can be dropped from a 100 story building before they break. But you only have $1.40 and the elevator costs a dime each time you ride it up (it's free for rides down).

How can you drop the coconuts to guarantee you will find the lowest floor they will break at, while starting and ending at floor 1?

How can you drop the coconuts to guarantee you will find the lowest floor they will break at, while starting and ending at floor 1?

Hint: They break when dropped from the same height and they don't weaken from getting dropped.

You could drop it at floor 1 first (because you start at floor 1). Then you would go to the floors: 14, 27, 39, 50, 60, 69, 77, 84, 90, 95, 99, and 100. Whatever floor your first coconut breaks at, go to the floor above the last floor the coconut survived and drop the second coconut from this floor. Then go up by one floor until the second coconut breaks and that is the lowest floor it will break at.

YES NO

*Did you answer this riddle correctly?*YES NO

## Three Hunters Riddle

Three hunters just finished hunting for the night and went down to a motel. They couldn't afford three separate rooms so they decided to get one room, and split the price. The room costed $30. (It was a run-down motel, but that's not the point.) So, they each paid their $10 and went to their room. The employee running the check-in/ check-out desk realized that she overcharged them, so she sent a bell-boy to return the extra cash. On the way the bell-boy wondered how to equally split the money... he wasnt the smart type so he just slid $2 into his pocket as a tip. That way the hunters would get $1 each. Well... they got their $1 each right? So in the end they all payed $9 each, which makes $27. Plus the $2 in the bell-boy's pocket makes $29...

What happened to the last dollar?

What happened to the last dollar?

Hint:

They didn't really pay $9 each, remember? The bell-boy was too lazy to add up the actual sum that they would pay. They reeeally payed about a $8.66 each. So $8.66 times the three of them equals about $25, plus the $5 in the bell-boys equals $30

YES NO

*Did you answer this riddle correctly?*YES NO

## A Single Item

Your boss gives you $10 and tells you to buy; Something for him to eat. Something for him to drink. Something to feed his cows and something to plant in his garden. And most importantly you can buy only a single item that meets all these criteria. What do you buy?

Hint:

## Ship Thief Riddle

A Japanese ship was en route in the open sea. The Japanese captain went for a shower removing his diamond ring and Rolex watch on the table. When he returned, his valuables were missing. The captain immediately called the five suspected crew members and asked each one where and what he was doing for the last 15 minutes.

The Filipino cook in a heavy overcoat said, I was in fridge room getting meat for cooking.

The Indian Engineer with a torch in hand said, I was working on generator engine.

The Sri Lankan seaman said, I was on the mast (top of the ship) correcting the flag which was upside down by mistake.

The British radio officer said, I was messaging to company that we are reaching the next port in 72 hours. From now that is Wednesday morning at 10 AM.

The British navigation officer said, I am on night watch, so sleeping in my cabin.

The captain caught the liar. So who is the thief?

The Filipino cook in a heavy overcoat said, I was in fridge room getting meat for cooking.

The Indian Engineer with a torch in hand said, I was working on generator engine.

The Sri Lankan seaman said, I was on the mast (top of the ship) correcting the flag which was upside down by mistake.

The British radio officer said, I was messaging to company that we are reaching the next port in 72 hours. From now that is Wednesday morning at 10 AM.

The British navigation officer said, I am on night watch, so sleeping in my cabin.

The captain caught the liar. So who is the thief?

Hint:

The thief is the Sri Lankan seaman. They are on a Japanese ship, so it will bear a Japanese flag. The Japanese flag will look the same upside down.

YES NO

*Did you answer this riddle correctly?*YES NO

## 10 Apples Riddle

Doctor Harish and a bus driver Manish are both in love with the same woman named Priyanka. The bus driver need to go for a long trip of 10 days. Before he left he gave priyanka 10 apples. Why?

Hint:

## Add Your Riddle Here

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