Verbal Reasoning - Mental Ability Questions

If "A" means "plus", "B" means "divide", "C" means "multiply" and "D" means "minus", then 180 B 36 C 5 A 8 D 32 = ?

Find the odd word/letters/number pair from the given alternatives.

Sumit wants to get his clothes washed. The laundry service charges in his city are such that for the first kg of clothes, he is charged Rs.150 and after that, he is charged Rs.50 for every kg that follows. If he gets 10kg of clothes washed, how much money does he pay for the laundry service ?

A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
-7.25, -5.75, -4.25, -2.75, ? , 0.25

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?

15 - 5 + 25 ÷ 10 = ?

In a certain code language, if COTTON is coded as 325526 and WOOLEN is coded as 122976, then TOWEL will be coded as?

In the following question, select the related word from the given alternatives.
Mathematics : Formulas : : Chemistry : ?

If 4 * 5 % 3 = 8000 and 2 * 3 % 2 = 36, then 4 * 3 % 3 = ?