CUET Preparation Today
CUET
-- Applied Mathematics - Section B2
Numbers, Quantification and Numerical Applications
What is the value of $(482×813) mod\, 7$ ?
2
8
4
6
The correct answer is option (4) { 6
$(482×813)mod\, 7$
$≡482(mod\, 7) ×813(mod\, 7)$
$≡6(mod\, 7) × 1(mod\, 7)$
$≡6×1(mod\, 7)$
$≡6(mod\, 7)$
$∴(482×813)mod\, 7 = 6$
