Are options of ques 1 number theory quiz-1 wrong?

In my opinion 11 mod 7=4
and 11 mod -7=3

hello @Ankit_kumar_3003

yeah first one is correct .
now for second ->
we can write
a= ( a/b ) *b + (a%b)
from above equation we get a%b= > a-(a/b) * b

a%b= a-(a/b) * b ||| note (a/b) here is integer division

put a=11 ,b=-7
11 %(-7) = 11 - (11/-7)*(-7)
. . . . = 11-(-1) * (-7)
. . . . = 11-(7)
. . . . = 4

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