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How do you write 2 in binary?

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Best answer
To write the number 2 in binary, you'll follow these steps:

1. **Understand Binary System**: Binary is a base-2 numeral system that uses only two digits: 0 and 1. Each digit represents a power of 2, starting from \(2^0\) on the right.

2. **Break Down the Decimal Number**: Convert the decimal number (base-10) to binary (base-2) by expressing it as a sum of powers of 2.

3. **Find Powers of 2**: List the powers of 2, which are:
   - \(2^0 = 1\)
   - \(2^1 = 2\)
   - \(2^2 = 4\)
   - \(2^3 = 8\)
   - and so on.

4. **Decompose the Number**:
   - For the number 2, find which powers of 2 add up to it.
   - The number 2 can be represented as \(2^1\) (which is 2) plus \(2^0\) (which is 0), because 2 = 2^1 + 0 * 2^0.

5. **Create Binary Representation**:
   - Start from the highest power of 2 that is less than or equal to 2. In this case, \(2^1\) fits, so place a '1' in the position for \(2^1\).
   - For \(2^0\), since it’s not used, place a '0' in that position.
   - The positions of binary digits (from right to left) are: \(2^0\), \(2^1\), \(2^2\), and so forth.

6. **Write It Out**:
   - For the number 2, you only need the positions for \(2^1\) and \(2^0\).
   - Thus, 2 in binary is written as `10`.

Here’s a breakdown:
- The rightmost bit (least significant bit) represents \(2^0\). For 2, this is 0.
- The next bit represents \(2^1\). For 2, this is 1.

So, putting it together: 2 in binary is `10`.
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To write the number 2 in binary, you follow these steps:

1. **Understand Binary Representation**: Binary is a base-2 number system, meaning it only uses two digits: 0 and 1. Each digit represents a power of 2.

2. **Convert the Number**:
   - Start with the number 2.
   - Determine which powers of 2 sum up to 2. The powers of 2 are 1, 2, 4, 8, etc.
   - For the number 2, we use \(2^1\) which equals 2.

3. **Write the Binary Representation**:
   - Each bit in the binary representation corresponds to a power of 2, starting from the right (least significant bit).
   - For the number 2, you need \(2^1\) (which is 2) and no \(2^0\) (which is 1). This is written as `10` in binary:
     - \(2^1 = 1 \text{ (binary digit 1)}\)
     - \(2^0 = 0 \text{ (binary digit 0)}\)

4. **Binary Representation**:
   - Write the binary digits in order of the powers of 2 from left to right.
   - For 2, the binary representation is `10`.

So, the binary representation of the decimal number 2 is `10`.
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