MathematicsMedium178×since 2002Q5216If the 10^th term of an A.P. is 120{1 \over {20}}201 and its 20^th term is 110{1 \over {10}}101, then the sum of its first 200 terms isA100B10012100{1 \over 2}10021C501450{1 \over 4}5041D50Check answerSkip