What is the predominant chemical compound found in human

Select the related letters/word/number from the given alternatives:

36 : 216 :: 43 : (?)

If 87 # 95 = 101 and 48 # 84 = 64, then 68 # 87 = ? 

If ECD = 24 and HGF = 42, then JKFG =

In the following question, select the related number from the given alternatives.

16 : 256 :: 23 : ?

Based on the numerical analogy given, choose the correct answer from the options given below:

16:56 32:?

Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.

In the following question, select the related word from the given alternatives.

DARING: HWNEJK :: LODGES: ?

Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.

In a certain language, if SCIENCE is coded as 8-24-18-22-13-24-22, then what would be the code for HISTORY?

A statement is given followed by two courses of action I and II. Analyse the given situation and select the appropriate course of action.