Daily Brain Teasers for Wednesday, 23 September 2020
puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Find number abc
If a2ab0 - 3a705 = cc1a5 find number abc. Multiple solutions may exist.The first user who solved this task is Nasrin 24 T.
#brainteasers #math
Calculate the number 306
NUMBERMANIA: Calculate the number 306 using numbers [1, 1, 9, 9, 63, 226] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #numbermania
Find number abc
If 3bca6 - b3937 = 8c79 find number abc. Multiple solutions may exist.The first user who solved this task is Nasrin 24 T.
#brainteasers #math
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.The first user who solved this task is Nasrin 24 T.
#brainteasers #mastermind
Armand-Hippolyte-Louis FizeauBorn 23 Sep 1819; died 18 Sep 1896 at age 76. French physicist who was the first to measure the speed of light successfully without using astronomical calculations (1849). Fizeau sent a narrow beam of light between gear teeth on the edge of a rotating wheel. The beam then traveled to a mirror 8 km/5 mi away and returned to the wheel where, if the spin were fast enough, a tooth would block the light. Knowing this time from the rotational speed of the wheel, and the mirror's distance, Fizeau directly measured the speed of light. He also found that light travels faster in air than in water, which confirmed the wave theory of light, and that the motion of a star affects the position of the lines in its spectrum. With Jean Foucault, he proved the wave nature of the Sun's heat rays by showing their interference (1847). |
Calculate the number 3577
NUMBERMANIA: Calculate the number 3577 using numbers [8, 5, 8, 4, 11, 681] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.The first user who solved this task is Nasrin 24 T.
#brainteasers #math #numbermania
MAGIC SQUARE: Calculate A-B*C
The aim is to place the some numbers from the list (2, 5, 7, 24, 27, 29, 49, 52, 54) 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.The first user who solved this task is Nasrin 24 T.
#brainteasers #math #magicsquare
Find number abc
If 414b4 + b452a = c59a0 find number abc. Multiple solutions may exist.The first user who solved this task is Nasrin 24 T.
#brainteasers #math
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.The first user who solved this task is Nasrin 24 T.
#brainteasers #mastermind
Calculate the number 4059
NUMBERMANIA: Calculate the number 4059 using numbers [7, 9, 5, 2, 32, 250] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.The first user who solved this task is Nasrin 24 T.
#brainteasers #math #numbermania
Find number abc
If a10a1 + 919ac = 1229b9 find number abc. Multiple solutions may exist.The first user who solved this task is Nasrin 24 T.
#brainteasers #math