Question

Questîon in the attachment

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Answer 1

Answer:

$\: \: \: \: \: \: \: \: \: \: \: \: \:$

Answer 2

Answer:

195

Step-by-step explanation:

Sn=2n[2a+(n−1)d]S10=210[2×6+(10−1)3]=5[12+27]=5×39=195