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Let a(1) , a(2) , a(3) …be an arithmetic...

Let `a_(1) , a_(2) , a_(3)` …be an arithmetic progression with `a_(1) = 7` and common difference 8 . Let `T_(1) , T_(2) , T_(3) ….,` be such that `T_(1) =3` and `T_(n + 1) = a_(n)` for `n ge 1` . Then which of the following is/are TRUE ?

A

`T_(20) = 1604`

B

`sum_(k = 1)^(20) T_(k) = 10510`

C

`T_(30) = 3454`

D

`sum_(k=1)^(30)=T_k=35610`

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