Question

If '+' stands for division; ${}^{\prime }{÷}^{\prime }$ stands for multiplication; ${}^{\prime }{\times }^{\prime }$ stands of subtraction; '-' stands for addition which one of the following is correct?

• A. $18÷6-7+5\times 2=20$
• B. $18+6÷7\times 5-2=18$
• C. $18\times 6+7÷5-2=16$
• D. $18÷6\times 7+5-2=22$

Answer 1

The correct option is B $18+6÷7\times 5-2=18$

Option (1) 18÷6−7+5×2=2018÷6−7+5×2=20
18×6+7÷5−2=2018×6+7÷5−2=20
108+75−2=20108+75−2=20
540+7−105=20540+7−105=20
547−10=20×5547−10=20×5 (this is wrong)
option (2) 18+6÷7×5−2=1818+6÷7×5−2=18
18÷6×7−5+2=1818÷6×7−5+2=18
3×7−5+2=183×7−5+2=18
21−5+2=1821−5+2=18 (correct)