A) \[\frac{2}{3}\]
B) \[\frac{15}{21}\]
C) \[\frac{16}{21}\]
D) \[\frac{17}{21}\]
Correct Answer: D
Solution :
[d] q is an integer, then number of possible outcomes in \[[-10,10]=21\] Now, for real roots, discriminant \[\ge 0\] \[\Rightarrow (q-4)(q+1)\ge 0\Rightarrow q\ge 4,q\le -1\] Then, number of favourable outcomes \[=7+10=17\] Hence required probability\[=\frac{17}{21}\]You need to login to perform this action.
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