Verbal Reasoning - Mental Ability Questions

If 3*1 = 20, 6*1 = 50 and 2*6 = -40, then find the value of 5*8 = ?

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

H, K, N, ?, T, W, ?

If 37*14 = 17,
69*33 = 34,
91*125 = 72
then what should 28*56 = ?

There is certain relationship between two given words on one side of : : and one word is given on another side of : : while another word is to be found from the given alternatives, having the same relation with this word as the given pair has. Select the best alternatives/ relationship.

Contamination : Food :: Infection : ?

If RESEARCH is $#!#%$&@ then SCARE is

In a code language, if LUCK is written as L2U1C3K1, then what is the last digit for the code for XEROX in that same language?

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

If "+" means "minus", "x" means "divided by", "÷" means "plus" and "-" means "multiplied by", then
76 x 4 + 4 – 12 ÷ 37 = ?