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

EFGH: LNPR : : ABCD : ?

Which of the mathematical signs should be interchanged in the given equation to make it mathematically correct?

31 ÷ 14 × 9 + 3 − 7 = 66

In a certain code language, '693' means 'Neha likes cakes', '135' means 'cakes are sweet', '254' means 'we are girls', then what is the code for 'sweet' in the same code language? 

Select the number that will replace the question mark (?) in the given number series.
 146, 90, 56, 34, 22, ?

In each of the following questions, certain pairs of words are given, out of which the words in all pairs excepts one, bear a certain common relationship. Choose the pair in which the words are differently related?

Select the option that represents the letters that, when sequentially placed from left to right in the blanks below, will complete the letter series.
 _ a _ _ W a L W _ L _ W a L _ a _a W _ L

Which of the following numbers will replace the question mark (?) in the given series?

41, 54, 67, 80, 93, ?

Select the option that is related to the third word in the same way as the second word is related to the first word. (The words must be considered as meaningful English words and must not be related to each other based on the number of letters/number of consonants/vowels in the word.)
 School : Students :: Hospital : ?