Which of the following is the binary equivalent of 25?

The binary equivalent of 25 is 11001. To convert decimal numbers to binary, we can use the division-by-2 method. Here are the steps: Divide the decimal number by 2. Write down the quotient (the result of the division) and the remainder (either 0 or 1). Divide the quotient by 2. Write down the new quotient and remainder. Continue this process until the quotient is 0. For 25, the process looks like this: 25 / 2 = 12 remainder 1 12 / 2 = 6 remainder 0 6 / 2 = 3 remainder 0 3 / 2 = 1 remainder 1 1 / 2 = 0 remainder 1 Reading the remainders from bottom to top, we get 11001, which is the binary equivalent of 25.