PL ALSO EXPLAI Let n! Equal n×(n-1) ×…×2×1. For example, 4! = 4×3×2×1 = 24. A clerk performs the computation: 1% of 2% of 3% of … 100% of n and gets the number 99! . How many digits in n are zero? A) 98 b) 99 c) 198 d) 199 e) 200

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

5× 1/2 = ? a) more than 5 because you are multiplying by a whole number b) 5/10 because you multiply the numerator and denominator by 5 c) less than 5 because you are multiplying by a number that is more than 1 d) less than 5 because you are multiplying by a number that is less than 1

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