Verbal Reasoning - Mental Ability Questions

Select the missing number from the given responses:

In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation.

3X4X5 = 435
4X3X2 = 342
2X3X4= ?

If 8 θ 12 δ 6 = 60 and 13 θ 15 δ 11 = 74, then 18 θ 21 δ 15 = ?

Aman is 4 years older to Bimal. Bimal is 2 years younger to Chaman. Chaman is 6 years older to Dhruv. Dhruv is 9 years younger to Esha. Who is the second eldest?

Farhan travels 4 km in the north-east direction and then turns towards the south-east to travel another 3 km. How far is he now from his original position?

Which set of letters when sequentially placed at the gaps in the given letter series shall complete it?

_r_r_t_r_r_t

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
RS, ZA, HI, ?

Pointing to a man in a photograph, Anitha said, "His mother's only daughter is my mother." How is Anitha related to that man?