Verbal Reasoning - Mental Ability Questions

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.
Biological

If 6#30=5; 8#24=3; 7#28=4; then what is the value of 8#40=?

If "S" denotes "multiplied by", "V" denotes "subtracted from", "M" denotes "added to" and "L" denotes "divided by", then

7 V 13 M 35 L 7 S 6 = ?

In the following question, select the odd word from the given alternatives.

Select the related number from the given alternatives.
3/7 : 7/3 :: 9/2 : ?

Select the related word/letters/number from the given alternatives.
Cup : Coffee:: Bowl : ?

How many triangles are there in the given figure?

In a row, there are 6 boys between A and B and A being the first boy in row. There are 3 boys between B and C. If there are 12 boys after C, then how many minimum boys are there in the row?