You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth. How long would it take for the machine to cut the roll if each cut took 4 secs?
Can you arrange four 9's and use at most 2 math symbols, to make the total 100?
Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?
Can you find out the remainder when 3^300 is divided by 5?
A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result. Can you find how bias is the floor in this case?
A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?
What three numbers, none of which is zero, give the same result whether they’re added or multiplied?
The square root of number 121 is "11". What is the square root of the number "12345678987654321."?
How can I get the answer 24 by only using the numbers 8,8,3,3? You can use the main signs add, subtract multiply and divide.
Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3. (You can use one number only once)
'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?
The word ladder puzzle was invented by Lewis Carroll, author of Alice’s Adventures in Wonderland.
