2/3 and 1/2
(2/3) / (1/2) = 11/3 ≈ 1.33
"of" (as in BODMAS) I was taught meant times , as is 50% of 30 is 50% x 30, so:
2/3 of 1/2 = 2/3 x 1/2
= 1/3
≈ 0.33
negative 1 over 3
4
1/(2/3) = 3/2
-1 + -2 is the same as -1 - 2. -1 - 2 = -3
There is some ambiguity in the use of "of". If 1 of 2 = 2, and 1 of 3 = 3 then 1 of 2 - 1 of 3 = -1 Alternatively, 1/2 - 1/3 = 3/6 - 2/6 = 1/6
negative 1 over 3
4
1 1 1 2 1 3 1 4 2 1 2 2 2 3 2 4 3 1 3 2 3 3 3 4 4 1 4 2 4 3 4 4
434
1/(2/3) = 3/2
1/2 + (11/2)*2 = 1/2 + (3/2)*2 = 1/2 + 3 = 31/21/2 + (11/2)*2 = 1/2 + (3/2)*2 = 1/2 + 3 = 31/21/2 + (11/2)*2 = 1/2 + (3/2)*2 = 1/2 + 3 = 31/21/2 + (11/2)*2 = 1/2 + (3/2)*2 = 1/2 + 3 = 31/2
There is some ambiguity in the use of "of". If 1 of 2 = 2, and 1 of 3 = 3 then 1 of 2 - 1 of 3 = -1 Alternatively, 1/2 - 1/3 = 3/6 - 2/6 = 1/6
1^3 + 2^3 = 1 + 8 = 9 2^3 + 1^3 = 8 + 1 = 9 There is also: 1^3 + (-1 + i√3)^3 = 9 1^3 + (-1 - i√3)^3 = 9 (-1/2 + i√3/2)^3 + 2^3 = 9 (-1/2 - i√3/2)^3 + 2^3 = 9
[(-4) + (-3)]*[(-2 - (-1)] = (-4 -3)*(-2 + 1) = -7*-1 = +7[(-4) + (-3)]*[(-2 - (-1)] = (-4 -3)*(-2 + 1) = -7*-1 = +7[(-4) + (-3)]*[(-2 - (-1)] = (-4 -3)*(-2 + 1) = -7*-1 = +7[(-4) + (-3)]*[(-2 - (-1)] = (-4 -3)*(-2 + 1) = -7*-1 = +7
There are 4845 combinations of 4 numbers from 20. They are: {1, 2, 3, 4}, {1, 2, 3, 5}, {1, 2, 3, 6}, {1, 2, 3, 7}, {1, 2, 3, 8}, {1, 2, 3, 9}, {1, 2, 3, 10}, {1, 2, 3, 11}, {1, 2, 3, 12}, {1, 2, 3, 13}, {1, 2, 3, 14}, {1, 2, 3, 15}, {1, 2, 3, 16}, {1, 2, 3, 17}, {1, 2, 3, 18}, {1, 2, 3, 19}, {1, 2, 3, 20}, {1, 2, 4, 5}, {1, 2, 4, 6}, {1, 2, 4, 7}, ... I'll leave the other 4825 combinations for you to list.
2^1^3=2 (2^1)^3=6
1