Which of the following is a secondary air pollutant :

Select the option in which the numbers are not related in the same way as are the number of the following set.

(43, 55, 80)

Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.

F S_ Y Z _ _ N _Z F _ _ Y Z

If 21 @ 16 = 12 and 30 @ 25 = 12, then 22 @ 17 = ?'. What will come in place of question mark?

Which word will best complete the relationship given below?

Bricklayer : Trowel :: Tailor : ?

If FROG - PARK = 10, MAID - LITE = 1, then HARM – ROPE=?

Select the option that is related to the third number in the same way as the second number is related to the first number. 10 : 109 :: 12 : ?

Shirt : Garment : Potato : _____________