What is the value of remainder when $987 +876 + 765 + 654 + 543 + 432 + 321 + 210 $ is divided by 6 ?
Answer & explanation
Correct answer: option 1
The correct answer is option (1) : 0
$987 = 3(mod\, 6)$
$876 =0(mod\, 6)$
$765= 3(mod\, 6)$
$654= 0(mod\, 6)$
$543= 3(mod\, 6)$
$432= 0(mod\, 6)$
$210= 0(mod\, 6)$
$≡(987 + 876 + 765 + 654 + 543 + 432 + 321 + 210) mod\, 6$.
$≡(3+ 0+3+0+3+0+3+0) mod\, 6$
$≡12\, mod\, 6$
$≡0\, mod\, 6$
Hence, remainder when
$(987 + 876 + 765 + 654 + 543 + 432 + 321 + 210) $ is divided by 6 = 0.