CUET Preparation Today
CUET
-- Applied Mathematics - Section B2
Numbers, Quantification and Numerical Applications
If $57≡x(mod\, 5)$. Then the least positive value of x is :
57
5
4
2
The correct answer is Option (4) → 2
$57≡x(mod\,5)$
$⇒\frac{57}{5}=\frac{55}{5}+\frac{2}{5}$
$⇒57=2(mod\,5)$
