The missing letters are given in the proper sequence as one of the alternatives. Find the correct alternative. 

—acca—ccca—acccc—aaa.

If 'X $ Y' means 'X is father of Y'; 'X # Y' means 'X is mother of Y'; 'X × Y' means 'X is sister of Y', then how is D related to N in N # A $ B × D?

Which word does NOT belong with the others?

If A denotes 'addition', B denotes 'multiplication', C denotes 'subtraction', and D denotes 'division', then what will be the value of the following expression?

5 B 5 B 3 A 14 C (28 D 7) A 5 B (13 C 9)

Fill in the blanks.

SCD, TEF, UGH                 WKL