39
im guessing you may have mixed that up but if you didnt, that is an impossible answer. the only factors of 11 are 1 and 11, which equal 12. but if you did mix them up the the answer is 7 and 4
Let the number be 'm' & 'n' Hence mn = 88 m + n = 18 m = 18 - n Substitute (18 - n)n = 88 18n - n^2 = 88 n^2 - 18n + 88 = 0 This does not readily factor so apply the Quadratic Eq'n. n = { --18 +/-sqrt[(-18)^2- 4(1)(88)]} 2(1) n = { 18 +/- sqrt[324 -352]} / 2 n = { 18 +/-sqrt[-28]} / 2 This is unresolved as you cannot take the 'square root; of a negative number.
29
11 & 29 or 17 & 23
23
This is easy. All you need to know is your 11 times table. 11 times 11 equals 121
3 times 7 times 11 equals 231.
11 11 times 25 equals 275
11 16 added 3 20 equals would be equal to a fraction 67/80.
Well, how about 11 x 11 = 121 ?11 x 11
11 times 7
It is: 1000/11 times 11 = 1000
121!