Math, asked by sirinswaleha, 10 months ago

if the sum of first 21 terms is 789 and sum of first 20 terms is 684 .Find its 21st term

Answers

Answered by AJ3012

1

Answer:

105

Step-by-step explanation:

See,

An=Sn - Sn-1

A21= 789-684

A21=105

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