The binary number system has a base of

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 binary system the highest value of a 8-bit number is

Q. (A) Express the number $47$ in binary number.
(B) Express the binary number ${110,111}_2$ in decimal system.

Q.

Number of binary operations on the set {a, b} are

(A) 10 (B) 16 (C) 20 (D) 8

Q. Number of binary operations on the set { a , b } are (A) 10 (B) 16 (C) 20 (D) 8