What's The Answer ?

What is the answer (1)/(6) +(1)/(12) +(1)/(20) +(1)/(30) +(1)/(42) +(1)/(56) ?

In a certain code language, '+' represents 'xx' , '-' represents '+', 'xx' represents '-:' and ' -:' represents '-'.What is the answer to the following question? 80xx16-:4+2-8=?

In a certain code language, '+' represents 'xx' , '-' represents '+', 'xx' represents '-:' and '÷' represents '-'. What is the answer to the following question? 56-:8+12-72=?

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents 'div' and -: represents '-'. What is the answer to the following question? 80 xx 16-: 4 + 2 - 8 = ?

In a certain code language '+' represents 'x', divide represents '-' and '-' represents '+'. What is the answer to the following questions? 56 divide 8+12-72=?

In a certain code language, '+' represents 'xx','-' represents '+', 'xx' represents '-:' and '-:' represents '-'. What is the answer to the following question ? 27xx3-:30+5-125=?

In a certain code language, '+' represents 'x','÷' represents'-', 'x' represents '+' What is the answer of the following question? 25 + 10 div 240 xx 16 = ?

In a certain code language '+ represets 'X', '-' represents '+', 'X' represents ' div ' and 'div' represents '-'. What is the answer to the following question? 234 xx 9 - 12 + 4 =? (A) 74 (B) 48 (C) 94 (D) 82

In a certain code language ,'+' represtns 'X', '-' represents '+', 'X' represents div , div represents '-'. What is the answer to the following question ? 24 xx 6 - 8 + 2 =? (A) 25 (B) 50 (C ) 40 (D) 20

In a certain code language '+', represents 'X', '-' represents '+', 'X' represents ' div ' and 'div' represents '-'. What is the answer to the following question ? 825 xx 25 -27 div 10 =?