81 + 83 = 164
27 and 81
36 and 45 = 81.
The sum is 121.
(4 x 9) + (5 x 9) = (9 x 9)c= 81
3 and 27.
-9 and -9 multiply to get 81. ■
24 two digit number, which sum is greter than their product. Which are following: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 30, 31, 40, 41, 50, 51, 60, 61, 70, 71, 80, 81, 90, 91
If it was a square, the answer would be 81 square cm. The area will be the product of two numbers whose sum is half the perimeter.
81
The number is 81.
9 (81 + 64 = 145)
They are -41 and -40.
81 + 83 = 164
27 and 81
The only pair of positive single-digit numbers which give a product of 81 are 9 and 9.
36 and 45 = 81.