CUET Preparation Today
CUET
-- Applied Mathematics - Section B2
Numbers, Quantification and Numerical Applications
$5^{100}(mod\, 9)$=
4
2
1
0
The correct answer is Option (1) → 4
$5^{100}=(5^6)^{96}.5^4$
$5^{100}\,mod\,9=(1).(5^4\,mod\,9)$
$⇒5^4\,mod\,9=4$
