If $\phi (n)$ represents Euler quotient function, then what is the value of $\phi (950)$ ?
Answer & explanation
Correct answer: option 2
The correct answer is option (2) : 360
$\phi(950)= \phi (2×5^2×19)$
$=\phi (2) × \phi (5^2) × \phi (19)$
$=(2-1) (5^2-5^1)(19-1)$
$= 1 × 20 × 18$
$= 360$