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>>girl cant even do anything of her choice..

In India we have messed up things so badly we have scared away a lot of people from having girl kids. I'm not talking about female infanticide and foeticide(This kind of things do happen, even now). But, These days those couples who have the morality of not committing such inhumane acts don't even bother to have a second kid if the first kid is a girl. While I see couples who have boy as a first kid generally go in for a second kid.

This is creating a massive irreparable gender imbalance in the society. Only this time, no one is breaking any law or committing any unethical or immoral activity. They are merely exercising their freedom to not bear children.

For a country where people have so much hate towards same gender marriages, every parent aspiring to have only boys is sort of straight hypocritical.



Maybe I'm misunderstanding your point, but the practice that you describe wouldn't result in an imbalance in the ratio of men to women.


Yes. This is a tech interview question at some companies.


Think of this analogy: every person in the world flips a fair coin. Those who flip tail, stop flipping coins. Those who flip head, flip one more time, and so on.

In expectation, the overall number of heads and tails will be the same - if you look at the system from the outside, it's just a bunch of independent flips with fair coins, the decisions of the participants have no effect.


Yes, but you are making a big assumption that it will be a fair coin.

In the real world. There are other factors that contribute to gender imbalance(Infanticide, foeticide, mortality etc). Plus also note that once the gender balance goes out of balance it continues get worse with every iteration.

So this basically works like algorithm which is continually trying to increase the count of M's above F's.


Maybe I'm bad at math, but wouldn't the set of (female, none), (male, female), and (male, male) ultimately lead to more females than males?


No, because the three cases happen with different probabilities:

(F,none): 0.5

(M,F): 0.25

(M,M): 0.25

The expected number of both F and M is 0.75


> But, These days those couples who have the morality of not committing such inhumane acts don't even bother to have a second kid if the first kid is a girl. While I see couples who have boy as a first kid generally go in for a second kid.

I think you switched "boy" and "girl" there.




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