If x2+x=20, which of the following is true? A x2−x<10x2−x<10 B 10 C 11 D 31
1 answer:
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Let A be the event and B be the vent
. Since the intersection of the events
, the events A and B are mutually exclusive.
The number is either odd or even. Since , the events are mutually exclusive and exhaustive.
Correct choice is "the number is either odd or even".