It really depends on the situation as probability depends on logic more than simple mathematical equations. However you must keep in mind a few principles:
1- P = number of possible outcomes of the event / total outcomes
2- P always less than or equal to 1.
3- For independent events A and B to occur simultaneously, P= P(A) x P(B)
You can send me the question you’re stuck at for further help.
Answer:
Now x is equals to 11
-2(11) + 1 = - 22 + 1 = - 21
The answer is - 21
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