CUET Preparation Today
CUET
-- Applied Mathematics - Section B2
Numbers, Quantification and Numerical Applications
(186 × 93) mod 7 is equal to :
3
1
5
0
The correct answer is Option (2) → 1
$(186×93)mod\,7$ can be written as
$((186)mod\,7×93(mod\,7))mod\,7$
$(186)mod\,7≡4$
$93(mod\,7)=2$
$∴(186)mod\,7×93\,mod\,7=8$
$8(mod\,7)=1$
