Verbal Reasoning - Mental Ability Questions

In a certain code language, 'x' represents '+', '÷' represents 'x', '-' represents '÷' and '+' represents '-'. Find out the answer to the following question.
 
15 x 4 ÷ 35 - 70 + 16 = ?

Find the missing number?

In the following question, select the odd letter from the given alternatives.

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

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series. NOM, QRP, TUS, ?

‘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?

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?

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

X_ZX_YY_ZX_Z