Help needed. Please find the mode of operation for each of the question. Please show workings

36. Option B.

37. Option E.

38. Option C.

39. Option C.

40. Option A.

Step-by-step explanation:

From the given diagram it is clear that the middle term is the difference between sum of left column and sum of right column.

Left column

Right column

Middle term

Similarly,

Now using same pattern, we can solve each question.

In ques 36,

Middle term =

Option B is correct.

In ques 37,

Middle term =

Option E is correct.

In ques 38,

Let missing number be x.

Option C is correct.

In ques 39,

Middle term =

Option C is correct.

In ques 40,

Let missing number be y.

Option A is correct.

stops on an even number.