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

$10\mathrm{.}03$

$20\mathrm{.}08$

$30\mathrm{.}16$

$40\mathrm{.}23$

$50\mathrm{.}23$

$60\mathrm{.}12$

$70\mathrm{.}11$

$80\mathrm{.}04$

a$.$ What is the probability that there are less than $5$ members in a household in India? $($Round your answer to $2$ decimal places.$)$

b$.$ What is the probability that there are $5$ or more members in a household in India? $($Round your answer to $2$ decimal places.$)$

c$.$ What is the probability that the number of members in a household in India is strictly between $4$ and $7?($Round your answer to $2$ decimal places.$)$