Evaluate :

( a )` ( -8 ) + ( -4 )` =
( b )` ( -1 ) times ( - 1 )`
( c ) `( -1 ) times (-1 ) times ( -1 )`

Evaluate : ( -1 ) times ( -2 ) times ( -3 ) times (-4 ) times ( -5 )

Evaluate : ( 1/b + 1 ) times ( 1/c + 1 ) times ( 1/b ) times ( 1/c )

Evaluate : ( -7 ) times ( -5 ) times ( - 8 ) times ( -1 ) =

Evaluate : (- (-1) times (-5 ) ) / ( (-1 ) times ( -4 ))

Evaluate : ( 1 )^3 times ( -3 )^3 times ( -4 )^2 times ( -1 )^8

Evaluate : (-1/2) times (-1/2 ) times ( -1/2 ) times (-1/2) times (-1/2 ) times ( -1/2 )

Evaluate : 1 ) ( 2/5 ) times ( -3/4 ) times ( 5/2 ) 2 ) ( -4/3 ) times ( 1/2 ) times ( -1/5 )

Evaluate : ( 1 - 1/2 ) times ( 1 - 1/3 ) times ( 1 - 1/4 ) times ( 1 - 1/5 ) =

Evaluate : ( 1 + 1/2 ) times ( 1 + 1/3 ) times ( 1 + 1/4 ) times ( 1 + 1/5 ) times ( 1 + 1/6 ) times ( 1 + 1/7) times ( 1 + 1/8 ) is equal to

Evaluate : ( -2/3 )^4 times ( -3 /4 )^2 times (-1)^8 times (-6)^2