CUET Preparation Today
CUET
-- Applied Mathematics - Section B2
Numbers, Quantification and Numerical Applications
If $Ω(n)$ = Total number of prime factors of n, n ∈ N. then what is the value of $Ω(420)$ ?
4
5
6
7
The correct answer is option (2) : 5
$420=2×2×3×5×7$
$Ω(420)= 5$
