How is a second meausred?
How do we know that 1 second is 1 second?
What is 1/2 times 1/2? Is it possible to prove that 1+1 is 2? What is the Five-Second Rule? How does it work? Are 1/2 and 2/4 the same number? What is the 20 second rule? How do you find the percent of two numbers? What is 1/4th of 4? How can you prove that 2 = 1? If 1 + 1 = 3, what is 1^2? What is the 3 second rule in basketball? How many numbers occur between 1 and 1.01? How many consecutive days does 1 million seconds equal? What does this mean - twice as many A as B? Which is correct: 1.5 hour or 1.5 hours? Why? How many two digit numbers leaves the remainder "1" when divided by two? In one day, how many times do the minute hand and the second hand of a clock make a straight line? How many one- and two-digit numbers give a remainder of 1 when divided by 3? What is 1+2? When people say "in a couple of days" how many days do they mean? How does one prove that 1 = 1? What is the remainder when -1 is divided by 3? How is 2^x+1=4^2(x-1)? What is 1 plus 1? How many 2/7 are there in 5/6? Can it be proven that 1 = 2? Math: is 2+2 really 4? What can we see once in a second, once in a minute, once in a year, once in a century and once in a thousand years? Is it possible to mathematically prove that 1=2? Why can 1 be equal to 2? If 2^2=2*2 than 2^1/2=?