Which among the following word cannot be formed using

In the following question, select the figure which can be placed at the sign of question mark (?) from the given alternatives.

Find the missing number (?). 

Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.

21 * 3 * 36 * 2 * 23 = 68

What should come in place of the question mark (?) in the given series based on the English alphabetical order?

WSF, BUK ,GWP ,LYU, ?

Select the figure from the given options that will replace the question mark (?) in the figure given below to complete the pattern.

Select the option that most closely resembles the image formed in the mirror of the given combination.