Verbal Reasoning - Mental Ability Questions

Select the related word/letters/number from the given alternatives. 456 : 15 :: 789 : ?

‘R + S’ means ‘R is mother of S’, ‘R – S’ means ‘R is wife of S’, ‘R × S’ means ‘R is son of S’ and ‘R ÷ S’ means ‘R is father of S’. Which of the followingrepresents K as the grandson of T?

Arrange the given words in the sequence in which they occur in the dictionary.
1. Dragon
2. Draculla
3. Dormont
4. Drapery
5. Deviate

If 9@3=12; 15@4=22; 16@14=4; then what is the value of 6@2=?

If 9x3=3; 15x3=5; 60x5=12; then what is the value of 27x3 = ?

If "A" denotes "multiplied by", "B" denotes "subtracted from", "C" denotes "added to" and "D" denotes "divided by", then

8 B 31 C 49 D 7 A 16 = ?

If 12 (20) 16 and 21 (35) 28, then what is value of A in 48 (80) A ?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

DE, HI, LM,?