Verbal Reasoning - Mental Ability Questions

What will be the next set of alphabets in the series? PBA, QCB, RDC, SED, ___

If 70*10 = -7, 50*5 = -10 and 10*5 = -2, then find the value of 80*1 = ?

If "#" means "subtraction", "&" means "division", "@" means "addition" and "%" means "multiplication", then 505 & 5 # 4 @ 20 % 5 = ?

If A = 1, E = 5, then HEAR = ?

What will come in place of the question marks (?) in the following Number series?8, 14, 26, 44, 68 (?)

If 45 % 11 = 7, 59 % 34 = 7 then what is the value of 55 % 4 = ?

Select the related word/letters/number from the given alternatives.
EFGH: LNPR : : ABCD : ?

In the following question, select the related number from the given alternatives.
65 : 82 : : 145 : ?