Using 8,8,8,8 what arithmetic symbols between them will get you to 10,15,56,65,80,120,192 and 520?

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Using 8,8,8,8 what arithmetic symbols between them will get you to 10,15,56,65,80,120,192 and 520?

what a brain teaser! Thanks for your help!

2007-02-14 16:15:06 · 3 answers · asked by LDog1911 1 in Science & Mathematics ➔ Mathematics

3 answers

(8+8)/2+8=10
(8+8)-(8/8)=15
(8-(8/8))(8)=56
8*8-(8/8)
8*8+8+8=80
8(8+8)-8=120
(8+8+8)8=192
8*8*8+8=520

2007-02-14 16:21:51 · answer #1 · answered by js2xtrem4u 2 · 1⤊ 0⤋

10: 8 + (8+8)/8
15: 8 + 8 - 8/8
56: 8 * (8 - 8/8)
65: 8 * 8 + 8/8
80: 8 * 8 + 8 + 8
120: Hmm.... oh... (8 + 8) * 8 - 8
192: 8 * (8 + 8 + 8)
520: 8 * 8 * 8 + 8

2007-02-15 00:25:11 · answer #2 · answered by Anonymous · 0⤊ 0⤋

10 = 8 + (8+8)/8
15 = 8 + 8 - 8/8
56 = 8*(8 - 8/8)
65 = 8*8 + 8/8
80 = 8*8 + 8 + 8
120 = 8*(8+8) -8
192 = 8*(8+8+8)
520 = 8*8*8 + 8

I like doing this. More please!

2007-02-15 00:20:12 · answer #3 · answered by Phineas Bogg 6 · 0⤊ 0⤋