How many ways are there to select a committee of 17 politicians chosen from a room full of indistinguishable democrats, indistinguishable republicans, and indistinguishable independents.

(a)-if every party must have at least two members on the committee?
(b)-if, in addition, no group may have a majority of the committee members?

the terms of a geometric sequence can be found by beginning with the first term and multiplying by the common ratio repeatedly. a recursive formula for a geometric sequence with common ratio r is given by an=ran−1 a n = r a n − 1 for n≥2 n ≥ 2 .

step-by-step explanation:

answer: 8 years

step-by-step explanation:

the explanation is that in 8 years the child will be 20 and in 8 years the father will be 40 and 20 is half of 40.