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within what range? there's high possibility in a group of 25 people
The probability is 1/12.
Say you choose 2 people: person A and person B
If person A was born in october for example, then person B has 12 months to choose from in terms of which month s/he was born in. Only one month will match with person's A month of birth. So that's why the probability is 1/12.
He's exactly right There are 12 months in one year and randomly you chose one month so therefore the chances are 1/12.
But since there are two people person A has a probability of 1/12 and person B has probability of 1/12.To find out the probability that both are both in the same month multiply the two probabilities and you get 1/144. so therefore answer is 1 out 144 chances there born in the same month! Hope I helped :D