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Mathematics 18 Online
OpenStudy (anonymous):

Find all replacements (less than the modulus. for the question mark that make the statement true. 7 + ? ≡ 3 (mod 8) A. 7 B. 5 C. 4 D. 2

OpenStudy (anonymous):

im so lost

OpenStudy (anonymous):

i can give u jst hint

OpenStudy (anonymous):

wat

OpenStudy (anonymous):

the answer is c

OpenStudy (anonymous):

sorry

OpenStudy (anonymous):

answer is c . 4

OpenStudy (anonymous):

according to the statement it says (7+ ?) is congruent to 3 modulus 8

OpenStudy (anonymous):

it means 8 divides ( 7 + ? ) - 3 which no satisfy this condition

OpenStudy (anonymous):

only 4

OpenStudy (anonymous):

in other words we can say that ..... when we divide ( 7 + ? ) by 8 and 3 by 8 we get same remainder

OpenStudy (anonymous):

when we divide 3 by 8 we get remainder 3

OpenStudy (anonymous):

so by which value we should replace ? such take we get remainder 3 on division ( 7 + ? ) by 8

OpenStudy (anonymous):

did u get me ?

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