In an AP ,if Sum of 21 terms is 1250 and sum of 20 terms is 1200. what is the 21th term???
Answers
Answered by
88
Since we know the relation that
= 
⇒
= 
= 1250 - 1200
= 50
Therefore, it's 21th term is 50
⇒
= 1250 - 1200
= 50
Therefore, it's 21th term is 50
Answered by
29
S21=1250
S20=1200
a21=S21-S20
a21=1250-1200
a21=50
S20=1200
a21=S21-S20
a21=1250-1200
a21=50
Frostsharmaaayush090:
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