The sum of last ten term of an AP :8,10,12,14,.........126.
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hello here is your answer by Sujeet yaduvanshi ☝☝☝☝☝☝☝
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last term is 126 and d is -2 because we find term from the last
An=a+(n-1)d
=126+(10-1)-2
=126-18
= 108(this is tenth term from the last)
Sn= n/2(a+l)
=10/2(126+108)
=10/2(234)
=10×117
=1170
hope this help you.
An=a+(n-1)d
=126+(10-1)-2
=126-18
= 108(this is tenth term from the last)
Sn= n/2(a+l)
=10/2(126+108)
=10/2(234)
=10×117
=1170
hope this help you.
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