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

Considerando quadrados da mesma área, com 4 palitos de fósforo formamos um quadrado, com 7 palitos de fósforo 2 quadrados, com 10 palitos de fósforo 3 quadrados

if a population of 5000 doubles in size every 55 years what will the population be 220 years from now

what is 4x+56y=100 divide it by 200

Ensuring the uninterrupted flow of information' describes which key communications and information systems principle? A. Security B. Reliability, Scalability,

The northern economy was based on

what is 6–3 simplyified

What is the perimeter of a rectangle with a length of 9 - 2y and width of 7?

Select the correct statement: 1. I work the harvest in France in the region of Champagne. 2. I am in Normandie working for the grape harvest. 3. Working in the

In what way were town meetings important to the development of local government? How might they have helped the growth of representative government?

which is a true statement about the trend in higher education cost? A. higher education costs are decreasing because of online education. B. higher education co