What is a "token" in lexical

In the following question, select the odd group of numbers from the given alternatives.

Select the figure from among the given options that can replace the question mark (?) in the following series and complete the pattern.

Complete the given series by finding the missing term:    ?, 1100, 990, 1089, 980.1, 1078.11

Which answer figure will replace the question mark given in the question  figure?  

Questions figure:

How many numbers are there between 99 and 1000 such that the digit 8 occupies the units place? 

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

Select the combination of letters that when sequentially placed in the blanks of the given letter series will

complete the series.