Question

Which term of the AP. 2. 11. 20. 29.... is 380?​

Answer 1

Step-by-step explanation:

a=2 d=11-2=9,. 20-11=9and an=380

using an=a+(n-1)d

380=2+(n-1)9

380=2+9n-9

380=-7+9n

380+7=9n

387=9n

387/9=n

43=n

therefore 43 term of AP.2.11.20.29........ is 380