how do you work out a percentage
A number is "factorific" if the sum of the factorials of each of its digits equals the number itself. Find the only three-digit factorific n
Find a five-digit multiple of 12 that uses only the digits 0 and 1.
In how many zeros does 75! end? (Note that is the product of the first positive integers; for example, .)
A number has three distinct digits. The sum of the digits equals the product of the digits. How many three-digit numbers satisfy this condit
An old book listed that 72 turkeys were bought for each, at a total cost of
What is the least positive number such that is divisible by 1, is divisible by 2, is divisible b
What is the smallest positive five-digit integer, with all different digits, that is divisible by each of its non-zero digits? (The number i
Suppose and are digits for which the product of the two-digit numbers and is 1971. Find the sum
How many sets of 3 primes sum to 20?
Four positive integers , , , and satisfy
what does ! mean on a calculator?
a 6 kg rock falls from a cliff just before it hits the ground its speed is 24 m/s from what height did it fall from?
if an item weight 45 kilograms, what is its weight in pounds
What percentage is 5 out of 53?
Explain why (–4x)^0 = 1, but –4x^0 = –4.
what is the 20th term if the first term is 4 and the common difference is -1/3?
finite, find the sum of 7 terms of 75,-15,3,-3/5