Verbal Reasoning - Mental Ability Questions

In the following question, select the word which cannot be formed using the letters of the given word.

BILLIONAIRE

Which of the following diagram represents the relationship among Tall men, Black haired, Indians?

If in a certain language, STRING is coded as TSIRGN, how is RANDOM coded in that code?

A series is given, with one word missing. Choose the correct alternative from the given ones that will complete the series.

cry, dome, super, random, ?

Select the related word/letters/number from the given alternatives.
66 : 36 : : 99 : ?

If Quarantine : Isolation, then Freedom : ___

If CHANTED is coded as ZEXKQBA, then how will MAY be coded as?

If SWEET is written as XAHGU, then HORSE is