1.

Find the eleventh term from the last term of the AP 27, 23,19,...-65

Answer» From the last we have AP as-65,........,19,23,27Here a=-65,d=23-19=4Now a11=a+10d=-65+10×4=-65+40=-25
-25
Here a=27,d=23-27=-4Now a11=a+10d=27+10×-4=27-40=-13
a11=-25


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