BrainDen.com - Brain Teasers

# All Activity

1. Today
2. ## American Indian Artwork

What a deliciously challenging and intriguing puzzle.
3. ## The Maiden and the Ogre

If you think you've heard this one before, read it carefully. It's not the standard puzzle. A beautiful maiden sits in a boat at the center of circular lake. On shore waits an ogre anxious to have his way with her. Being an excellent sprinter she knows she can outrun and therefore escape the lumbering ogre if only she can land her boat safely. But should the ogre reach her landing point first, alas, all will be lost. The boat is propelled by a motor capable of only a fraction f of the ogre's speed. What is the minimum value of f that will permit the Maiden to escape?
4. ## American Indian Artwork

An archaeological artifact is depicting figures of some natural and artificial objects like the sun, moon, comet, star, flower, horse, bird , insect, headdress, mountains, river, house, weapons, bonfire and necklace. The translation of the symbol message below is "WIND, RAIN, FLAME, SOIL, ESSENCE". According to experts, there are 5 polyomino tiles that were used as patterns for making the outline of the figures in this artwork. They also believed that these 5 tiles altogether should fill and fit in any of the 16 figures depicted above. What are these polyominoes?
5. Yesterday
6. ## I'm not a rebellious missionary

Vdsffbfdfgxgbbbhdfgnfdgnfdbgtd fgffgbfbgfgdfgbgfbgffbfghbfgngfgnhgfgnfff hhfghhngfggfbdfgbggfnhffffffffffssssfefggfgffd

1+2 = 1
8. Last week
9. ## Possible sequence...

Phil1882 is right ... there is a discrepancy. The 6th term may possibly be 532 901 * 532 901 + 1 = 283 982 410 001.
10. ## What is my clock telling me to do?

That's some two-year-old. And yes, it's time to ..
11. Thanks for creating Homework Help related feature, I want to ask that there will be any kind of web development and programming related help.

The conditions were that God can not lift the stone not shall not.
13. Earlier
14. ## Factory

Yes... He is right. if machine B worked 5 hours more,it means that it worked 200 hours more to keep up with machine A. i.e. machine A overtook by 200 hours... Each hour both the machines works, machine A overtakes machine B by 5 hours... To overtake by 200 hours machine A has to work (200/5)= 40 hours
15. ## Factory

Machine A worked 40 hours. 45x = 40(x + 5 ); 45x = 40x +200.; 5x = 200 ;x = 40
16. ## Factory

Machine A refused to work overtime and only did his 40.
17. ## Factory

Machine A and Machine B work in the same factory. Machine A can produce 45 widgets in one hour and Machine B can produce 40 widgets in one hour. During one week, Machine B worked five more hours than Machine A but produced the same number of widgets as Machine A. How many hours did Machine A work that week?
18. ## 1 + 2 = 4?

I correct you. You're wrong. 1 + 2 = 3 is not "technically a lie."
19. ## 1 + 2 = 4?

i'm not fully sure what you are asking, yes, no object is perfectly identical to another, but that doesn't mean they are necessarily worth less/more. if i have two apples, one shaped like a pear, the other like a cucumber, i still have two apples.
20. ## Zodiac Sign Challenge

Thanks, about what I guessed. I just didn't take the time to follow it to its full conclusion

24. ## Just an old (Tennessee) mountain goat.

I've been playing around with puzzle geocaches for awhile, now, on a fb page dedicated to them. Someone asked for help on one that was a logic problem. HEAVEN!!!! Another poster said it sounded like Einstein's riddle, which I'd never heard of. So of course I googled it, and solved it in less than an hour. But one of the listings that came up in the google search was BrainDen. Two puzzles later, I'm hooked. So, what are the reputation points all about?

26. ## Zodiac Sign Challenge

You've got all of them correct! Kindly tell all Braindenners how you managed that. My explanation to follow after that (if necessary).
27. ## 100 %

@mtngoat @SamSam11
28. ## 100 %

I came up with this answer. pls see attached file. IMG_0012 (2).pdf
29. ## 100 %

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