Sir last me apne ek galti kari hai 480x8=3840 hota hai, 3640 nahi hota hai. Magar koi bath nahi yeh toh chota sa ek galti hai jo insaano se hi hota hai. Sabse bara problem toh yeh hai ke apka answer book ke answer se match bhi nahi karta hai .
Hume toh yeh bhi nahi pata ke aap hume aur kitni videos mein galti kar ke dikha rahe ho sir . Hum toh yehi videos dekh kar padhai karte hain. Aur agar yeh hi galat nikle toh hum toh 60 ya 50 ke upar marks nahi la payenge
Sie aap na pehle drana band kero bachho difficult difficult ker ke pehle hi bolte ho aap jaise teacher tabhi bachhe darte h maths se lakin reality me maths is very easy subject