can somebody explain how to solve these two questions?
5.101001000100001
1.The decimal number above consists of only 1's and 0's to
the right of the decimal point. The first 1 is followed by one 0, the second 1 is followed by two 0's, the third 1 is followed by three 0's, and so on. What is the total number of 0's between the 98th and the 101st 1 in this decimal number?
(A) 288
(B) 291
(C) 294
(D) 297
(E) 300
2.During a sale, a customer can buy one shirt for x dollars. Each additional shirt the customer buys costs z dollars less than the first shirt. For example, the cost of the second shirt is x - z dollars. Which of the following represents the customer's cost, in dollars, for n shirts bought during this sale?
(A) x+ (n-1)(x-z)
(B) x + n(x - z)
(C) n(x-z)
2006-07-26
12:31:25
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10 answers
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asked by
Daine W
2
in
Mathematics