litwork6970 litwork6970
  • 09-02-2024
  • Mathematics
contestada

The number of n digit numbers which consists of the digits 1 and 2 only if each digit is to be used at least once, is equal to 510 then n is______.
(a). 7
(b). 8
(c). 9
(d). 10

Respuesta :

Otras preguntas

explain how you know which coins could be used to show 0.77 of a dollar
Jordan bought a notebook for $5, 6 pencils for $1 each, and a binder for $9. The sales tax for the whole purchase was $2 What percent was the sales tax?
write 3/4 ÷1/2 in simplest form
who designed the liberty bell
is 17/8 greater or less than 9/4
a survey showed that 82% of youth most often use internet at home what fraction of youth surveyed most often use the internet somewhere else?
What religion took hold across most of Europe during the Dark Ages?
the value of the x-intercept for the graph of 4x-5y=40 is
what is 1.323 as a percent
While attending a town hall meeting, you hear someone from a national energy company argue that a new natural gas drill site will not be environmentally damagin