Problem in 4 Variable k-Map with full explanation in Tamil I Digital Electronics I EasyECE Tutorial

Minterm and maxterm https://www.youtube.com/watch?v=2JCX4m8rXf8 Sum of products https://www.youtube.com/watch?v=XyqTl8nqqCw https://www.youtube.com/watch?v=HuLkVAGMQrE Pdoduct of Sum https://www.youtube.com/watch?v=AASQsiBs4OU https://www.youtube.com/watch?v=QbIHeUgTMiI K-Map https://www.youtube.com/watch?v=_o6oGULIn2c https://www.youtube.com/watch?v=xeZDrkpq2rQ https://www.youtube.com/watch?v=O-CKpRiB8Jo Problem in 2 variable K Map https://www.youtube.com/watch?v=bfHp_yO0pF0 Problem in 3 variable K Map https://www.youtube.com/watch?v=vEMxaiPcXss https://www.youtube.com/watch?v=7DjBYkMluVo https://www.youtube.com/watch?v=hoZpf0WDpBs