Question

The sum of first 9 terms of an arithmetic series is 90 and the ratio of third and sixth term is 1 : 2. Find the first term and 8th term.

Answer 1

Answer:

The first term

$= 9 \d1iv 90 \\ = 2 \\ 10 \cot( \beta \cot( \cos( \alpha \beta \alpha \%ee \gamma \cot( \gamma 6822 \div 556 + 3720515 = - 2623 + .20.3640 + ) ) ) )$