Math and Arithmetic
What is 4x4x4x4x4x4x4?
Asked in Math and Arithmetic, Statistics, Algebra
How many seven digit numbers can be formed with the digitis 1 2 4 7?
This answer is based on assumptions that indicate we want the size of a set S of numbers, the five smallest of which are 1,111,111 1,111,112 1,111,114 1,111,117 1,111,121 and the two largest of which are 7,777,774 7,777,777 The following two numbers would therefore not be in S: 1 777,777 The answer is: 47 = (4x4x4x4x4x4x4) = 16,384