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CBSE Class 11-science Answered

7th sum
question image
Asked by lovemaan5500 | 19 Jun, 2018, 12:06: PM
answered-by-expert Expert Answer
as this is in AP 2q=p+r----eq(1)
as in GP
q=p.c & r=p*c2 
where  c=common ratio,
putting in eq(1)
2*p.c=p+p*c2 
hence
c2+1-2c=0
( c-1)2=0
so c=1
frm(1)
p-q=q-r
or (p-q)/(q-r)=1=c
Answered by Arun | 20 Jun, 2018, 10:57: AM

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