the sum of first 7 terms of an A.P. is 20 and that of next 7 term is 27. Find the common difference
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the sum of first 7 terms of an A.P. is 20 and that of next 7 term is 27. Find the common difference
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2nd smallest no. =x+1
3rd smallest no. =x+2
And so on till x+6
A.T.Q
X+x+1+x+2+x+3+x+4+x+5+x+6=20
7x+21=20
7x=20-21
7x=-1
X=-1/7
Smallest no. =-1/7
2nd smallest=-1/7+1=6/7
3rd smallest=13/7
And so on till 34/7
This way you can get the other terms and subtract smallest with 1st smallest no., 2nd with 2nd smallest no. And so on and the difference would be the same