What is the probability that a person who was surveyed has less than $5 in his or her wallet? 11.51% 21.19% 78.81% 88.49%

Proceed as in example 3 in section 6.1 to rewrite the given expression using a single power series whose general term involves xk. ∞ n(n − 1)cnxn − 2 n = 2 − 4 ∞ ncnxn n = 1 + ∞ cnxn n = 0

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Find the missing dimension extra points