How Many Batteries?
You have a flashlight that takes 2 working batteries. You have 8 batteries but only 4 of them work.
What is the fewest number of pairs you need to test to guarantee you can get the flashlight on?
What is the fewest number of pairs you need to test to guarantee you can get the flashlight on?
Hint:
7. If you break the batteries into 3 groups: Two groups of 3 and one group of 2. By doing this you guarantee that one of the groups has 2 working batteries. Both of the groups of 3 have 3 possible combinations of 2 batteries and the group of 2 only has 1 combination. So, 3 + 3 + 1 = 7 tries at most to find two working batteries. Did you answer this riddle correctly?
YES NO
YES NO
I Cover The Planet
I have a floor but I'm not a room
I wave but have no hand
I'm wet but I'm not a towel
I have currents but no electricity
I contain fish but I'm not a tank
I cover a lot of the planet but I'm not land
I wave but have no hand
I'm wet but I'm not a towel
I have currents but no electricity
I contain fish but I'm not a tank
I cover a lot of the planet but I'm not land
Hint:
High Tide
Hint:
Voiceless It Cries Riddle
Hint: You can feel it, but can not see it.
The King Of Measure
Hint:
The More You Take, The More You Leave Behind
Many times you need me. The more and more you take me further, the more and more you leave me behind. What am I?
Hint:
Force And Strength Can Not Get Through Riddle
What force and strength can not get through, I with a gentle touch can do, and many in the streets would stand, were I not as a friend in hand.
Hint:
It Hears With No Ears Riddle
It lives without a body, hears without ears, speaks without a mouth, and is born in air. What is it?
Hint:
Not A Single Person Riddle
While walking across a bridge I saw a boat full of people. Yet on the boat there wasn't a single person. Why?
Hint:
Sleeping Fish Riddle
Hint:
Four Brothers Riddle
There are four brothers in this world that were all born together. The first runs and never wearies. The second eats and is never full. The third drinks and is always thirsty. The fourth sings a song that is never good. What are these four brothers?
Hint:
A Race Between Waves
Hint:
Rain Coming Down Riddle
Hint:
I'm A Dividing Line At An Edge
I'm a dividing line at an edge; a squiggle of land lacking rock or ledge. I stretch out far and sometimes wide, but you'll stay dry if you pick my side. There's salt on my breath, and I've sand for feet; you sometimes sit with me in the heat. When waves come to call, I hold them back- keeping your visit right on track. But remember, should they ever choose to rise, those who leave surly are wise.
What am I?
What am I?
Hint:
Never Wetter Riddle
Hint:
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