**(28) _{10} = (X)_{2}=> X = _____?**

28 / 2 = 14 (+0) => X = ____0

14 / 2 = 7 (+0) => X = ___00

7 / 2 = 3 (+1) => X = __100

3 / 2 = 1 (+1) => X = _1100

1 / 2 = 0 (+1) => X = 11100

**(11100) _{2} = (X)_{10}=> X = __?**

X = 1 * 16 + 1 * 8 + 1 * 4 + 0 * 2 + 0 * 1

X = 28

**Instructions:**

Convert the given number from a decimal number system to a binary system or vice versa.

Convert number 15 from decimal system to binary system.

(15)_{10} = (________)_{2}

Convert number 15 from decimal system to binary system.

(15)_{10} = (**1 111**)_{2}

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