Which of the following actinomycetes is responsible for

Find the missing number by analysing the pattern followed by the numbers in each row.

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

Select the related number from the given alternatives.

29 : 65 : : 43 : ?

E/M ∶ 20/156: : G/O: ?

In each of the following questions select the related letter/word/figure/number from the given alternatives.

JRH : ? : : KOV : 51 

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

6, 31, 126, 381, 766, ?

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

Find the missing number.

20, 30, 42, 56, 72, ?

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