actually 5 bits required to represent -15 in 2's compement

because range of 2's complement no is -2^{n-1 }to +2^{n-1}-1

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**Convert the magnitude, -15 to binary.**

**1111**

**To make it 8 bits pad 4 extra bits to 1111 (Always Before)**

**00001111**

Negate the number by inverting the bits and adding 1.In simple words

Take the 2's complement of the no

11110001 (from LSB when u see ist 1 leave it as it is and thereafter flip the all bits.)

To match the answer ignore most significant 3 bits ANS - 10001

For -15, we have to complement its binary value - 01111..

actually 5 bits required to represent -15 in 2's compement

because range of 2's complement no is -2^{n-1 }to +2^{n-1}-1 .. therefore it will be 10001

In 2's complement representation positive integers are represented in its normal binary form while negative numbers are represented in its 2's complement form.

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