Fill in the "_" with a (+,-,/, or x), each is only used once, but one is used twice.
2006-11-07 10:31:43 · 3 answers · asked by Vertigo 1 in Science & Mathematics ➔ Mathematics
44 11 57 39 13 86 = 200
Let's try working backwards:
Guessing that we subtract 86:
44 11 57 39 13 - 86 = 200 (used -)
Guessing that we multiply by 13 (since 286 is an even multiple)
44 11 57 39 * 13 = 286 (used *, -)
Guessing that we subtract 39:
44 11 57 - 39 = 22 (used -, *, -)
Now we are close... looks like 57 was added:
44 11 + 57 = 61 (used +, -, *, -)
And we have one sign left (/) and it works perfectly:
44 / 11 = 4 (used /, +, -, *, -)
Final answer:
(44 / 11 + 57 - 39) * 13 - 86 = 200
Note: you have to perform the operations left to right. Precedence rules appear not to apply, but I added parentheses just to clarify this.
2006-11-07 10:43:09 · answer #1 · answered by Puzzling 7 · 1⤊ 0⤋
44 / 11 + 57 - 39 * 13 - 86 = 200
2006-11-07 18:44:57 · answer #2 · answered by aplpie 3 · 0⤊ 1⤋
i am sorry i can't do it it would take me 30 min and i am a good math sutdent good luck
2006-11-07 18:45:06 · answer #3 · answered by princess-of-somany 3 · 0⤊ 0⤋