• Views : 70k+
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Coin Riddles With Answers #1 - Famous Probability Interview Problem

Difficulty Popularity

James Horner is having two coins in his hand. Out of the two coins, one is a real coin and the second one is a faulty one with Tales on both sides. He blind folds himself choose a random coin and tosses it in the air. The coin falls down with Tale facing upwards.

What is the probability that this is the faulty coin?

  • Views : 50k+
  • Sol Viewed : 20k+

Coin Riddles With Answers #2 - Logic Coins Puzzle

Difficulty Popularity

Assuming i have an infinite supply of coins.

What is the fewest number of coins would be required in order to make sure each and every coin touched exactly three other coins.

By Admin
  • Views : 40k+
  • Sol Viewed : 10k+

Coin Riddles With Answers #3 - Nine Coins Picture Puzzle

Difficulty Popularity

Nine coins are arranged in a triangle as shown in the picture below. You need to slide two triangles to form a square. Can you do it?


  • Views : 50k+
  • Sol Viewed : 20k+

Coin Riddles With Answers #4 - Ias Logic Question

Difficulty Popularity

A guy claims to do the following thing. He puts a coin in a glass bottle. Then, he shuts the mouth of the bottle with the help of a cork. Now he manages to remove the coin out from the bottle without taking out the cork or breaking the glass bottle.

Do you know how he can do it?

  • Views : 70k+
  • Sol Viewed : 20k+

Coin Riddles With Answers #5 - Logic Picture Problem

Difficulty Popularity

As you can notice in the picture that ten coins have been arranged to form a triangle pointing upwards. What you have to do is move three coins and make that triangle point downwards. Can you do it in just 3 moves?

  • Views : 60k+
  • Sol Viewed : 20k+

Coin Riddles With Answers #6 - Coin Probability Brain Teasers

Difficulty Popularity

You keep tossing a fair coin for twenty times. Each time, the coin lands up with tails up.

What is the probability that if you toss it now, the coin will land with heads up this time?

  • Views : 50k+
  • Sol Viewed : 20k+

Coin Riddles With Answers #7 - Fake Coin Brain Teaser

Difficulty Popularity

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

By Admin
  • Views : 60k+
  • Sol Viewed : 20k+

Coin Riddles With Answers #8 - Which Coins Riddle

Difficulty Popularity

Nalini had six coins in the pocket of her jeans. It was a sum of Rs. 1.15.

When she was asked by a shopkeeper for change, she was unable to give change for a rupee and five paisa.

Which coins did she have?

  • Views : 30k+
  • Sol Viewed : 10k+

Coin Riddles With Answers #9 - Interesting Coin Probability Puzzle

Difficulty Popularity

A man tosses three coins in the air. When they land, he finds that two of the coins have heads up and one has tails up.

What is the probability that when the coins are tossed again, they will land again with two heads up and one tails up.

Please note that the coins are unbiased.

  • Views : 70k+
  • Sol Viewed : 20k+

Coin Riddles With Answers #10 - Cool Funny Coin Riddle

Difficulty Popularity

You are gifted a coin that is dated 378 B.C. How much worth the coin is as per your assumption?

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