Use te pascal’s term triangle or the binomial theorem to find them coefficient on the a^2 term in the expression of (2a+1)^5

Assume that a population of 50 individuals has the following numbers of genotypes for a gene with two alleles, b and b: bb = 30, bb = 10, and bb = 10. calculate the frequencies of the two alleles in the population’s gene pool.

You are cycling around europe with friends. you book into a hostel and you ask the owner what the ratio of men to women is currently staying there. there are 24 men and 6 women. what is the ratio of men to women in its simplest form?

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?