India is the second most populous country in the world, with a population of over 1 billion people. Although the government has offered various incentives for population control, some argue that the birth rate, especially in rural India, is still too high to be sustainable. A demographer assumes the following probability distribution for the household size in India.

Household Size	Probability
1	0.06
2	0.12
3	0.16
4	0.22
5	0.21
6	0.13
7	0.07
8	0.03

a. What is the probability that there are less than 5 members in a household in India?

b. What is the probability that there are 5 or more members in a household in India?

c. What is the probability that the number of members in a household in India is strictly between 4 and 7?