Verbal Reasoning - Mental Ability Questions

From the given alternative words, select the word which cannot be formed using the letters of the given word. SPECULATION

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

XFB,UGD ,RIG ,OLK, ?

Arrange the given words in the sequence in which they occur in the dictionary.
1. Xenons
2. Xylyls
3. Xanthic
4. Xenians
5. Xyst

If 14 (16) 18 and 33 (64) 25, then what is the value of ‘A’ in 25 (49) A?

If "S" denotes "multiplied by", "V" denotes "subtracted from", "M" denotes "added to" and "L" denotes "divided by", then

5 V 9 M 63 L 9 S 7 = ?

If C is coded 3 , DASH is coded as 32 , then DANCE will be coded as

In a certain code language, "NATURE" is written as "TANURE". How is "LISTEN" written in that code language?

Which set of letters when sequentially placed at the gaps in the given letter series shall complete it?

_r_r_t_r_r_t