The sum of 5 numbers in AP is 30 and sum of their squares is 220. Which of the fHome | Discussion Forum
The sum of 5 numbers in AP is 30 and sum of their squares is 220. Which of the following is the third term ?
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1) An AP consist of 31 terms if its 16th term is m, then sum of all the terms of this AP is
2) Common difference of sequence 5,8,11,14,… is
3) The sum of the first four terms of an AP is 28 and sum of the first eight terms of the same AP is 88. Sum of first 16 terms of the AP is
4) If the roots of the equation (b - c)x2 + (c - a)x + (a-b) = 0 are equal, then
5) 2,4,6,8,10,12,… is