43. A sum is a binary operation. You have a sum of two things. There is no sense in a sum of one thing.
x + y = 48
24+25=49
24+16=40
37 and 5
43. A sum is a binary operation. You have a sum of two things. There is no sense in a sum of one thing.
n + 46n + 46
x + y = 48
24+25=49
The sum of the first forty positive integers can be calculated using the formula for the sum of an arithmetic series, which is (n/2)(first term + last term) where n is the number of terms. In this case, the sum is (40/2)(1 + 40) = 820.
3 X (40 + 6) = 138
6 x 7
24+16=40
37 and 5
Four times ten; thirty-nine and one more., The sum of four tens; forty units or objects., A symbol expressing forty units; as, 40, or xl.
18.583 and -2.583
18 and 25