Query Bits Doubt in expected Output

#1

if for 4 bit let the bits after update of 1 0 3 be 1111 now for query 0-2 ans would be 7 or 11.

#2

Not get your doubt.
Mention problem link and paste code on coding blocks IDE and share link here .
Pls explain your query.

#3

after query : 2 0 2
answer would be: 7 (111)