Of all the numbers, 81 was rated one of the top. It is consistently in the annual 'Euphoric Numbers Contest' top 10. They only number that is guaranteed to be happier than 81 is 3.
81
Well, isn't that a happy little math problem? If 81 is 90 percent of a number, we can find the whole number by dividing 81 by 0.90. That would give us the number that 81 is 90 percent of. Just like painting, math can be a beautiful and calming experience.
81 is a multiple of 3.
No, 81 is an odd number.
There is no recorded number for this statistic. There are definitely plenty to keep everyone in the world happy, however.
81 is not prime it's a composite number
The square number of 81 is 9. 9 x 9 = 81
81 is not a prime number. 81 = 3 * 3 * 3 * 3
Oh, dude, the least common multiple (LCM) of 81 and 72 is 648. It's like when you're trying to find the smallest number that both 81 and 72 can both divide into evenly without leaving a remainder. So yeah, 648 is the magic number that makes both 81 and 72 happy.
No, -81 is not an irrational number because it can be represented in the form x/y = -81
It is a composite number, you can get 81 by mulitpling 1*81, 3*27, and 9*9.compositeNo the number 81 is not prime it can be divided by nine.composite
81 is a square number