Which element in HTML5 is used to indicate navigation

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

18, 19, 27, 36, ___, 225

In the following question, a series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

What will come in the place of question mark?

Study the given matrix carefully and select the number from among the given options that can replace the question mark (?) in it.

Select the number that can replace the question mark (?) in the following series. 

Find the missing term :

2, 5, 11, 23, ?

Select the missing number from the given responses:

What will come in the place of question mark?

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