Verbal Reasoning - Mental Ability Questions

In the following question, select the related letters from the given alternatives.
JKLM : IIII : : PQRS : ?

If, 1*2= 1,
2*3= ­1 and
3*4= ­5, Then find the value of 7*9= ?

In the following question, select the related word from the given alternatives.
Mathematics : Formulas : : Chemistry : ?

If MACHINE is coded as 19-7-9-14-15-20-11, how will you code DANGER?

If A=1, HAT=29, then PAN=?

If WORK = 7935, ROCK = 3587 and WART = 1945, which digit stands for T?

Deepak introduces Raju saying, "He is the husband of the granddaughter of the father of my father." How is Raju related to Deepak?

If "S" denotes "multiplied by", "P" denotes "subtracted from", "R" denotes "added to" and "Q" denotes "divided by", then 14641 Q 121 P 100 S 2 R 100 = ?