The coefficient of the 5th, 6th and 7th terms in a binomial expansion of (1 + x)" in ascending powers of x are consecutive
terms in a linear sequence. Find the possible values of n.

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.