The sum of two numbers is 45 and their difference is 5. What are the two numbers? Let's start by calling the two numbers we are looking for x and y. The sum of x and y is 45. In other words, x plus y equals 45 and can be written as equation A: x + y = 45 The difference between x and y is 5. In other words, x minus y equals 5 and can be written as equation B: x - y = 5
9 and 36
45 and 45
There are ninety 2-digit numbers all together. 45 of them are odd numbers. The other 45 of them are even numbers.
There are 45 such numbers.
There are 45 such numbers.
They are: 36+9 = 45.
They are: 9*5 = 45
43 and 2
90/2 = 45 180/4 = 45 and infinitely many more.
If you have a set of 45 numbers, then there is one combination that includes all 45 numbers and 45! = 45 x 44 x 43 x ... x 2 x 1 ≈ 1.19622 x 1056 permutations (ways of ordering) all 45 numbers.
10 and 45. 10=5*2 10+45=55 45*2=90 45=5*9 10*9=90
1+2+3+4+5+6+7+8+9 = 45