Chemists And Nitrates Riddle
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Friday Night Fun Riddle
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Calcium, Nickel And Neon Animal Riddle
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Heard At Night Riddle
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A frog. The frog is an amphibian in the order Anura (meaning "tail-less") and usually makes noises at night during its mating season. Did you answer this riddle correctly?
YES NO
YES NO
Not A Nickel Riddle
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A dime and a nickle, ONE of them isn't a nickle but the other one is. Did you answer this riddle correctly?
YES NO
YES NO
Given Each Night Riddle
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Black As Night Riddle
With three eyes and a black as night, I frequently knock down ten men with a single strike! What am I?
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Nightime Bats Riddle
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Invisible At Night Riddle
I fly like a bird of many colors through the sky. I am made with both wood and fire but I do not burn up. You can see me clearly during the day, but I am nearly invisible at night. What am I?
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I Visit You Every Night Riddle
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A Pregnant Woman Wakes Up Riddle
A pregnant woman goes out of her room goes to the fridge, opens a can of tuna, soda, yoghurt and a cookie. What did she open first?
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The Person Who Makes It Sells It Riddle
The person who makes it, sells it.
The person who buys it never uses it.
The person who uses it doesnt know it.
What is it?
The person who buys it never uses it.
The person who uses it doesnt know it.
What is it?
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Person Who Built It Sold It Riddle
The person who built it sold it. The person who bought it never used it. The person who used it never saw it. What is it?
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A Rickety Bridge Riddle
Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?
Hint:
17 mins.
The initial solution most people will think of is to use the fastest person as an usher to guide everyone across. How long would that take? 10 + 1 + 7 + 1 + 2 = 21 mins. Is that it? No. That would make this question too simple even as a warm up question.
Let's brainstorm a little further. To reduce the amount of time, we should find a way for 10 and 7 to go together. If they cross together, then we need one of them to come back to get the others. That would not be ideal. How do we get around that? Maybe we can have 1 waiting on the other side to bring the torch back. Ahaa, we are getting closer. The fastest way to get 1 across and be back is to use 2 to usher 1 across. So let's put all this together.
1 and 2 go cross
2 comes back
7 and 10 go across
1 comes back
1 and 2 go across (done)
Total time = 2 + 2 + 10 + 1 + 2 = 17 mins Did you answer this riddle correctly?
YES NO
The initial solution most people will think of is to use the fastest person as an usher to guide everyone across. How long would that take? 10 + 1 + 7 + 1 + 2 = 21 mins. Is that it? No. That would make this question too simple even as a warm up question.
Let's brainstorm a little further. To reduce the amount of time, we should find a way for 10 and 7 to go together. If they cross together, then we need one of them to come back to get the others. That would not be ideal. How do we get around that? Maybe we can have 1 waiting on the other side to bring the torch back. Ahaa, we are getting closer. The fastest way to get 1 across and be back is to use 2 to usher 1 across. So let's put all this together.
1 and 2 go cross
2 comes back
7 and 10 go across
1 comes back
1 and 2 go across (done)
Total time = 2 + 2 + 10 + 1 + 2 = 17 mins Did you answer this riddle correctly?
YES NO
Growing On Trees Riddle
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