Verbal Reasoning - Mental Ability Questions

In a certain code language, @ represents '+', ⊕represents '-', α represents '+'and 'θ' represents 'X '. Find out the answer of the following question.

107 θ 3 ⊕ 64 α 8 ⊕ 2θ9=?

If "S" denotes "multiplied by", "V" denotes "subtracted from", "M" denotes "added to" and "L" denotes "divided by", then 36 L 9 S 8 V 7 M 5 = ?

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

_d_be_c_ed_b

The weights of 4 boxes are 100, 90, 80 and 40 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?

In the question, a word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as in two matrices given below. The columns and rows of Matrix I are numbered from 0 to 4 and that of Matrix II are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column, e.g., 'C' can be represented by 04, 40, etc., and 'K' can be represented by 56, 75, etc.
Similarly you have to identify the set for the word 'NICE'.

Choose the related word/letters/number from the given alternatives. CD : 916 : : ? : 100144

If 4 + 3 = 25 and 8 + 4 = 80 , then, 3 + 2 = ?

Ajit, starting from a fixed point, goes 10 m towards North and then after turning to his right he goes 10 m. Then he goes 5,10 and 10 meters after turning to his left each time. How far is he from his starting point?