• Brain Teasers & Puzzles

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    • Bulb in a room riddle

      100 light bulbs lined up in a row in a long room. Each bulb has its own switch and is currently switched off. The room has an entry door and an exit door. There are 100 people lined up outside the entry door. Each bulb is numbered consecutively from 1 to 100. So is each person. Person No. 1 enters the room, switches on every bulb, and exits. Person No. 2 enters and flips the switch on every second bulb (turning off bulbs 2, 4, 6, etc). Person No. 3 enters and flips the switch on every third bulb (changing the state on bulbs 3, 6, 9, etc). This continues until all 100 people have passed through the room. What is the final state of bulb No. 64? And how many of the light bulbs are illuminated after the 100th person has passed through the room?

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      SherlockHolmes Expert Hard Riddles.
      • 1,037.4K views
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    • Ring ridle

      While playing with a metal ring, John accidentally pushed it on his finger too far and couldn’t get it off. Trying to remove it using soap and water didn’t work. The hospital sent him to a service station thinking they could cut the metal. Since the ring was made with a specially hardened steel, it couldn’t be cut. Just then Joju arrived on the scene and suggested an easy way to remove the ring in just a few minutes. What was his solution?

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      SherlockHolmes Expert Logic Puzzles.
      • 1,037.1K views
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    • Think with mind riddle

      It is a surprise! It is a miracle!

      It sprouted without a seed, It stood without a trunk. Think it with mind !

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      SherlockHolmes Expert Logic Puzzles.
      • 1,037.8K views
      • 1 answers
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    • Name the trees riddle

      In the below sentences, the names of three trees are hidden . The letters are in consecutive order. You have to find them ?

      “On this farm, we get ham from a hog any time. The farmer will help in every possible way. He faced two very similar choices, both bad”

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      SherlockHolmes Expert Brain Teaser.
      • 1,038.4K views
      • 1 answers
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    • Bathtub filling riddle

      Outflow plug is opened and to be fill up the bathtub with both taps full on. The hot tap takes 6 minutes to fill the bathtub. The cold tap takes 2 minutes and the water empties through the plug hole in 4 minutes.

      In how many minutes will the bath be filled ?

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      SherlockHolmes Expert Math Puzzles.
      • 1,039.1K views
      • 2 answers
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