The computers use

A. decimal system

B. binary system

C. base 5 system

D. base 6 system

Q. Decimal system consist of numbers from and binary system uses only

Q. The base of the decimal number system is ten, meaning, for example, that 123=1.10${}^2$ + 2.10 + 3.
In the binary system, which has base two, the first five positive integers are 1,10,11,100,101. The numeral 10011 in the binary system would then be written in the decimal system as:

Q. In the numeration system with base $5$, counting is as follows : $1,2,3,4,10,11,12,13,14,20$,____. The number whose description in the decimal system is $69$, when described in the base $5$ system, is a number with:

Q. The number 251 in decimal system is expressed in binary system by :