Ten.
It is the same number: 1. Binary numbers are base-2, with each digit place corresponding to an exponent of 2 rather than 10 in the decimal number system. So that the number 11, which in decimal means 10 + 1, would represent 2 + 1 (3) in the binary system, which can only have the value 0 or 1 in each digit place.
not the same
The binary number 10101010 is equivalent, in decimal representation, to 128 + 32 + 8 + 2 = 170. But this answer assumes that the given number is binary - an assumption for which there is no real justification. Besides, the relationship is an equivalence, which is not quite "the same thing".
The same as in decimal. You divide one number by the other, and if you get a whole number as a result (or if you get no remainder, depending on how you do the division), it is divisible. Note that you might also convert both numbers to decimal, and do the division in decimal.
16 is the 4th power of 2. So a hexadecimal number is converted to binary by replacing each hex digit by the 4-bit binary number having the same value. Conversely, in converting binary to hexadecimal, we group every 4 bits starting at the decimal (binary?) point and replace it with the equivalent hex digit. For example, the hexadecimal number 3F9 in binary is 1111111001, because 3 in binary is 11, F (decimal 15) is 1111, and 9 is 1001.
FF in Hex is the same as 255 in Decimal, 377 in Octal and 11111111 in Binary FF in Hex is the same as 255 in Decimal, 377 in Octal and 11111111 in Binary
Just add a zero on the right-hand end of it. ============================== Another contributor bloviated: Just the same as multiplying a number in base ten by ten : just tack a 0 on the end, Binary 11 (decimal value 3) multiplied by decimal two is binary 11 times binary 10 which comes to binary 110. In any base, multiplying by the value of the base tacks a zero on the end, because the value of the base, written in that base, is always 10.
Octal codes are often used to write the numerical value of a binary number because it is easier to convert from binary to octal, instead of binary to decimal. You can convert to octal on sight, and it simply requires grouping the binary bits into groups of three, whereas converting to decimal requires repeated division by 10102 or 1010. Actually, grouping into three bits is the same as dividing by 1002 or 810 so the process is really the same. Divide by 8 to get octal. Divide by 10 to get decimal.
The value doesn't change. In base-5, you'd have to write it as '141', but you, the decimal guy, the binary guy, and the octal guy would each still have the same number of beans in your respective pockets.
The value (magnitude) of integer number 15 is the same as the real (decimal) number 15.0
It is not clear what this question is about. The number pi is not composed of any number system. Even though the digits will be different, pi is a constant which will have the same value whatever the number system: decimal, binary, octal, et cetera.