Question

Guys Plz heIIp me I w¡ll do anyth¡ng if U heIp me Plezeee
[Question in attachment]​

Answer 1

Answer:

You have to see this way:

Across AB (3 ohm), the resistance 2 and 5 are in series, =7. This 7 is in parallel to AB 3 ohm

Rab=3+1/{(1/2)+(1/5)}=3+1/(7/10)=3+10/7=31/10