How many three-digit numbers are possible under each condition? (a) The leading digit cannot be zero. 900 numbers (b) The leading digit cannot be zero and no repetition of digits is allowed. numbers 648 (c) The leading digit cannot be zero and the number must be a multiple of 2 125 numbers (d) The number is at least 500. numbers

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter11: Rational And Irrational Numbers
Section11.8: Adding And Subtracting Radicals
Problem 5E
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I am confused about parts C and D. 

How many three-digit numbers are possible under each condition?
(a) The leading digit cannot be zero.
900
numbers
(b) The leading digit cannot be zero and no repetition of digits is allowed.
numbers
648
(c) The leading digit cannot be zero and the number must be a multiple of 2
125
numbers
(d) The number is at least 500.
numbers
Transcribed Image Text:How many three-digit numbers are possible under each condition? (a) The leading digit cannot be zero. 900 numbers (b) The leading digit cannot be zero and no repetition of digits is allowed. numbers 648 (c) The leading digit cannot be zero and the number must be a multiple of 2 125 numbers (d) The number is at least 500. numbers
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