Daily Brain Teasers for Tuesday, 16 December 2025
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
What a winning combination?
The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Calculate the number 3828
NUMBERMANIA: Calculate the number 3828 using numbers [3, 1, 3, 8, 90, 336] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Find number abc
If 4c7b7 - c7ca2 = b4b5 find number abc. Multiple solutions may exist.
10 yo-yo jokes to celebrate National yo-yo day
1. Why don't yo-yos make good friends?
- Because they always let you down!
2. What did the yo-yo say to the tightrope?
- "Now, that's what I call a string walk!"
3. How do yo-yos cheer each other up?
- They say, "Hang in there, it'll be an up and down ride!"
4. Why was the yo-yo so good at making decisions?
- It always knew how to go back and forth!
5. Why don't yo-yos work in zero gravity?
- They can't deal with the ups and downs!
6. What did the yo-yo say to the super glue?
- "I need someone who won't let go!"
7. Why was the yo-yo the life of the party?
- Because it always knew how to unwind!
8. How did the yo-yo become a successful motivational speaker?
- It always knew how to bounce back!
9. What do yo-yos say when they introduce themselves?
- "I’m not as up-tight as I appear!"
10. Why was the yo-yo accused of being a spy?
- Because it always goes undercover!
Which is a winning combination of digits?
The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Johann Wilhelm RitterBorn 16 Dec 1776; died 23 Jan 1810 at age 33.German physicist who discovered the ultraviolet region of the spectrum (1801) and thus helped broaden man's view beyond the narrow region of visible light to encompass the entire electromagnetic spectrum from the shortest gamma rays to the longest radio waves. After studying Herschel's discovery of infrared radiation, he observed the effects of solar radiation on silver salts and deduced the existence of radiation outside the visible spectrum. He also made contributions to spectroscopy and the study of electricity. |
Calculate the number 3992
NUMBERMANIA: Calculate the number 3992 using numbers [5, 4, 5, 5, 85, 898] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
MAGIC SQUARE: Calculate A*B+C
The aim is to place the some numbers from the list (13, 16, 20, 22, 23, 25, 26, 29, 30, 62, 92) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A*B+C.
Find number abc
If ba6aa - a0c91 = 1a2b6 find number abc. Multiple solutions may exist.
What a winning combination?
The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Calculate the number 1669
NUMBERMANIA: Calculate the number 1669 using numbers [3, 5, 9, 6, 39, 344] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Find number abc
If 9c3bc - ccc0b = 19ab2 find number abc. Multiple solutions may exist.
