The word Interogatories is misspelled against Interrogatories, which is plural of "Interrogatory"
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Interrogatories has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings inte & ogatories which should not be misspelled with single 'R'
Wrong Spelling:  inte-r-ogatories 
Correct Spelling:  inte-rr-ogatories 
Find more incorrect spellings of Interrogatories to spell right way.