Math, asked by jacksparrow995500, 3 months ago

10th term of an arithmetic sequence is 20 and its 20th term is 10.
a)What is its common difference ?
b)What is its first term ?c)What is its 30th term ?

Answers

Answered by satishchaudhary99

2

,we use the formula for nth term of AP and get two equations,,which we solve further to get first term and common difference.

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