Verbal Reasoning - Mental Ability Questions

The weights of 4 boxes are 20, 30, 40 and 60 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?

If "#" means "subtraction", "&" means "division", "@" means "addition" and "%" means "multiplication", then 505 & 5 # 4 @ 20 % 5 = ?

1/2 - 1/8 =

A series is given, with one word missing. Choose the correct alternative from the given ones that will complete the series.
Shy, Food, Plate, Recess, ?

A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.

100, -20, 4, ? , 0.16, -0.032

In a certain code, 329 means 'you are bad', 419 means 'bad is good' and 195 means 'nothing is bad'. ___ represents 'good'.

Which pattern will the given transparent sheet resemble when it is folded at the dotted line?

In each of the following questions, four words have been given out of which three are alike in some manner, while the fourth one is different. Choose the word which is different from the rest.