Select the correct set of symbols:
34  16  4  12  = 26

19 ( 36 ) 13 and 37 ( 81 ) 28, then what is the value of A in 43 ( A ) 38.

24:27 = ? :: 81

Four clusters have been given out of which three are alike in some manner and one is different. Select the one that is different.

Option

Which number will come in the place of question mark?
45, 55, 66, 78, 91, ?

Which letter set will come in place of question mark (?) in the following series?
LOK, PQP, VSV, DUC, ?

If P means -, Q means +, R means x and  S means ÷ then what is the value of  8 R6S3Q5P9 

Select the letter-pair that can replace the question mark (?) in. the following series
BA, DC, FE, HG, ? , LK