Why has the Government of India enacted the law to fix the minimum age of marriage as 18 in girls and 21 in boys?

State whether the following statements are true or false. Correct the false statements. The minimum age for marriage in India is 18 for girls and boys.

A class has 15 students whose ages are 14,17,15,14,21,17,19,20,16,18,20,17,16,19 and 20 years.One student is selected in such a manner that each has the same chance of being chosen and the age X of the selected student is recorded.What is the probability distribution of the random variable X?Find mean,variance and standard deviation of X.