Verbal Reasoning - Mental Ability Questions

If 4 * 2 = 3 and 8 * 4 = 3 , then 21 * 7 = ?

If 11$25 = 18, 12$20 = 16 then what is the value of 4$50 = ?

If 'x' means addition, '­' means division, '÷' means subtraction and '+' means multiplication, then which of the equations is correct?

If 2*10 = 6, 14*16 = 15 and 4*16 = 10, then find the value of 16*8 = ?

Which of the following doesn't fit into the series?
5-1-96, 27-1-96, 18-2-96, 12-3-96, 2-4-96.

14 notebooks of a class were corrected with ink pen while 22 notebooks were corrected with colour pencil. If 4 notebooks were corrected with both, what is the strength of class?

In a certain code language, 'x' represents '+', '÷' represents 'x', '-' represents '÷' and '+' represents '-'. Find out the answer to the following question.

17 x 18 ÷ 30 - 20 + 14 = ?

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

12 V 3 M 441 L 21 S 8 = ?