In a certain code language. 'Attend class daily

Select the number from among the given option that can replace the question mark (?) in the following series.

6, 31, 126, 381, 766, ?

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.

Select the missing number from the given responses:

Study the given pattern carefully and select the number that can replace the question mark (?) in it.  

First row: 14, 22, 31

Find the missing numbers.

Select the option that is related to the third number in the same way as the second number is related to the first number.

15 : 5 :: 26 : (?)

Choose the correct alternative from the given ones that will complete the series.

3.5 , ?,  8.3, 10.7, 13.1 , 15.5

Select the number from the given option that can replace the question mark (?) in the following series:

32, 16, 24, 60, ?, 945

Select the number from the given option that can replace the question mark [?] in the following series.

515, 517, 520, 525, 532, 543, 556, ?

 Find the missing number.