ledroses5256 ledroses5256

03-09-2017
Mathematics

contestada

How many 3 digit positive integers are odd and do not contain the digit 5?

Respuesta :

03-09-2017

Hello,
Assume n=a*100+b*10+c un integer positive odd with no 5.

a∈{1,2,3,4,6,7,8,9} ,#8
b∈{0,1,2,3,4,6,7,8,9},#9
c∈{1,3,7,9},#4
Number of integers searched: 8*9*4=288

Answer Link

Otras preguntas

Which battle took place mainly on land? Battle of the Coral Sea Battle of Midway Battle of the Philippine Sea Battle of Okinawa

The most common budgeting period is

Which of the following is expository text? a. fiction b. poem c. short story d. biography

Ultraviolet is a scientific term meaning which of these? before violet within violet without violet beyond violet

A rectangle is drawn on a coordinate grid. three of its four vertices are located points ( -1,-2), (-1,4) and (2,-2). What is the location of the fourth vertex?

analyse possible sources of conflict that may arise when planning and ways to resolve them

A worker’s positive reaction to a negative performance review from an employer might be to ______. a. ignore the criticisms made at the review b. address the

The body system that contains mammary glands is the

Buying a new house can increase one's stress level. TRUE or FALSE

In the development of a cancer cell, the formation of new blood vessels is called a. carcinogenesis. b. angiogenesis. c. metastasis. d. differentiation.