Verbal Reasoning - Mental Ability Questions

In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation.

8 x 5 x 0 = 805 , 7 x 4 x 6 = 764 , 6 x 8 x 9 = ?

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

In a certain code language, " EXCITED" is written as "DETICXE". How is "KINLEY" written in that code language?

If 'x' means '-', '-' means 'x', '+' means '/' and '/' means '+', then what is the value of 15 - 2 / 900 + 90 x 100?

A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
400, -200, 100, ? , 25, -12.5

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

CAL, AWF, YSZ, WOT, ?

If 15#2 = 26, 11#3 = 16 and 10#9 = 2, then find the value of 11#4 = ?

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
XIIIII, IXIIII, IIXIII, IIIXII,IIIIXI, ?