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Each pixel on a computer screen is composed of three small dots of compounds called phosphors surrounded by a black mask. The three separate phosphors produce red, green, and blue light, respectively.
The sum of the digits of a two-digit number is 9, and when the digits are reversed, the number decreases by 45. Find the changed number.
What is the number of divisors of 360?
A number leaves a remainder of 12 when divided by 19. What will be the remainder when three times that number is divided by 19?
In a group of three numbers first is double of second and half of third. The average of three numbers is 42. Find the difference between the first numbe...
Find the remainder when the number (289n + 95) is divided by 17.
Find the number of zeroes in the end of 160!
How many numbers lie between 2000 and 3000 divisible by 5 can be made with the digits 2, 3, 4, 5, 6, 7 and 8 without repeating any digit?
