When a mirror placed at a line AB then shows the exact mirror image of the given image?

In the following question, Letter pair is given and one Letter group is missing from one pair. Choose the correct option.
BDF: GIK:: MOQ:? 

In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative.
m _ nm _ n _ an _ a _ ma_

In each of the following questions, select the missing number from the given responses.

In the following questions complete the number series :
204, 100, 48, 22, ___

Find the missing number from the given responses.

Find the missing number at the Question mark(?).
5, 7, 11, ?, 35, 67

Select the odd letters from the given alternatives.