Puzzles That Are Not Solved Anywhere on the Internet

Ankita
Member • Nov 26, 2011

Puzzles That Are Not Solved Anywhere on the Internet

Let's make a collection of difficult puzzles & their solutions here. 😉

Come up with puzzle questions whose answers can not be found through google search.

CEans will try to solve it.

PS: Do not post spam comments. Just put the questions!

Replies

Howdy guest!

Dear guest, you must be logged-in to participate on CrazyEngineers. We would love to have you as a member of our community. Consider creating an account or login.

Replies

Kate_w

Member • Nov 29, 2011

Ok I really appreciate your effort for starting something like this , who thinks , you thought so it matters! Well I would surely think of some unsolved puzzles and riddles which I could possibly put here. For now here's a brainteaser link you would love to have a look at.
<a href="https://www.iqtestexperts.com/brainteasers/" target="_blank" rel="nofollow noopener noreferrer">Brain Teasers | IQ Test Experts |</a> 😒

Are you sure? This action cannot be undone.
Cancel
Ankita Katdare

Administrator • Dec 2, 2011

Kate_w
Ok I really appreciate your effort for starting something like this , who thinks , you thought so it matters! Well I would surely think of some unsolved puzzles and riddles which I could possibly put here. For now here's a brainteaser link you would love to have a look at.
<a href="https://www.iqtestexperts.com/brainteasers/" target="_blank" rel="noopener noreferrer">Brain Teasers | IQ Test Experts |</a> 😒
Liked some of those puzzles. 😨

I want CEans to share really tough ones here.

PS: Low response to this thread shows how hard time I had coming up with puzzles during the Grand Quiz Contest.

Come on folks! Give us the toughest from your bag.😏

Are you sure? This action cannot be undone.
Cancel
PraveenKumar Purushothaman

Member • Dec 20, 2011

4 LONGEST LINES: Make four long lines simultaneously, one of each colour. Your score is the combined total of each of the four lines. Only the longest line of each colour counts.

4 LONGEST LOOPS: Make four long loops simultaneously, one of each colour. Your score is the combined total of each of the four loops. Only the longest loop of each colour counts.

Are you sure? This action cannot be undone.
Cancel
PraveenKumar Purushothaman

Member • Dec 20, 2011

Solve this:

Data:
A, B, C, and D want to get across a lake 312 miles across.
Swimming speeds in mph: A=4, B=8, C=12, and D=16!
They have a motorboat that goes at 48mph but this boat can only take 2 persons.
D leaves first; 2 hours later the other 3 leave.
During the last hour, a strong salmon decides to push the boat. This causes the boat to go 72mph during the last hour.
All 4 arrive on other side at same time, 16 hours after D left.

Questions:
How many miles did the boat travel?
For how many hours did A swim?
How many miles did C swim?
How many hours was B in the boat?

NOTE: Everything is in complete miles and hours (no fractions of nothing), all speeds are constant, no interfering currents, no lost of time getting in/out of boat, no loss of time doing boat u-turns, no hanging on to the back of the boat or other such dishonest stuff; in other words, no dirty tricks to make your life miserable.

Are you sure? This action cannot be undone.
Cancel
Sagar07

Member • Dec 21, 2011

Praveen-Kumar
Solve this:

Data:
A, B, C, and D want to get across a lake 312 miles across.
Swimming speeds in mph: A=4, B=8, C=12, and D=16!
They have a motorboat that goes at 48mph but this boat can only take 2 persons.
D leaves first; 2 hours later the other 3 leave.
During the last hour, a strong salmon decides to push the boat. This causes the boat to go 72mph during the last hour.
All 4 arrive on other side at same time, 16 hours after D left.

Questions:
How many miles did the boat travel?
For how many hours did A swim?
How many miles did C swim?
How many hours was B in the boat?

NOTE: Everything is in complete miles and hours (no fractions of nothing), all speeds are constant, no interfering currents, no lost of time getting in/out of boat, no loss of time doing boat u-turns, no hanging on to the back of the boat or other such dishonest stuff; in other words, no dirty tricks to make your life miserable.

Answers:
Boat travelled in all 696 miles....
A didn't swim at all....
C swim for 10 hours......
B was in the boat for 5 hours......

Are you sure? This action cannot be undone.
Cancel
Sagar07

Member • Dec 21, 2011

Explanation:

D left 1st....
Hour no 1: D-16 miles
Hour no 2: D-32 miles
next A and B leave with the boat while C starts to swim..
Hour no 3: D-48 miles, A-48 miles, B-48 miles, C-12 miles
Hour no 4: D-64 miles, A-96 miles, B-96 miles, C-24 miles
Hour no 5: D-80 miles, A-144 miles, B-144 miles, C-36 miles
Hour no 6: D-96 miles, A-192 miles, B-192 miles, C-48 miles
Hour no 7: D-112 miles, A-240 miles, B-240 miles, C-60 miles
At this moment B leaves the boat, starts swimming and A comes back to take C....
Hour no 8: D-128 miles, A-192 miles, B-248 miles, C-72 miles
Hour no 9: D-144 miles, A-144 miles, B-256 miles, C-84 miles
Hour no 10: D-160 miles, A-96 miles, B-264 miles, C-96 miles
So, A meets C and C joins the boat....
Hour no 11: D-176 miles, A-144 miles, B-272 miles, C-144 miles
Hour no 12: D-192 miles, A-192 miles, B-280 miles, C-192 miles
Hour no 13: D-208 miles, A-240 miles, B-288 miles, C-240 miles
Hour no 14: D-224 miles, A-288 miles, B-296 miles, C-288 miles
C leaves the boat, starts swimming and A comes back to take D....
Hour no 15: D-240 miles, A-240 miles, B-304 miles, C-300 miles
At the last hour, D joins the boat and boat travels with 72 miles/hr,
Hour no 16: D-312 miles, A-312 miles, B-312 miles, C-312 miles.....

All 4 reach at the same time..................

Are you sure? This action cannot be undone.
Cancel
PraveenKumar Purushothaman

Member • Dec 21, 2011

That was brilliant, Sagar!

Are you sure? This action cannot be undone.
Cancel
Sagar07

Member • Dec 21, 2011

Thanx....

Are you sure? This action cannot be undone.
Cancel