<p>Consider the following circuit.</p> <p><img alt="" src="https://firebasestorage.googleapis.com/v0/b/mcaprep-d6081.appspot.com/o/663f20152c2e00b03a72f1ed.png?alt=media&token=1807d603-ed59-4cde-b48c-0f5a0679b726" /></p> <p>How many minimum numbers of two inputs NAND gates are required to design the above circuit?</p>