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4 Probability of an event E+ PP8Bablity U5 Ifn" term of an A.P. is (2n + 1). What is the sum of its first three terms?l uie Co F'nd the value ofa, for which point P (a/3, 2) is the mid-point of the line segment joining thepoints Q (-5, 4) and R (-1, 0).(2 |
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Answer» If nth term of an A.P = 2n+1then, first term of A.P = 2(1)+1= 2+1= 3then, second term = 2 (2) + 1=4+1=5third term = 2 (3) +1=6+1=7sum of terms = 3+5+7sum of terms = 15 question no.6 |
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