Question

If the value of number $z$ is atleast $10$, but not more than $15$, then .

• A. $10\le z\le 15$
• B. $10<z<15$
• C. $10\le z<15$

Answer 1

The correct option is A $10\le z\le 15$

Given,
A. $z$ is at least $10\Rightarrow z\ge 10$
B. $z$ is not more than $15\Rightarrow z\le 15$
$\therefore$ From A and B, we get
$z\ge 10$ and $z\le 15\Rightarrow 10\le z\le 15$