MCQ
$y < -2$ involves region are, $...........?$
- Aabove dotted line $y = -2$
- ✓below dotted line $y = -2$
- Cabove complete line $y = -2$
- Dbelow complete line $y = -2$

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$11$. If $\frac{a_1^2+a_2^2+\ldots+a_{11}^2}{11}=90$, then the value of $\frac{a_1+a_2+\ldots+a_{11}}{11}$ is equal to