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Let a ,x, y ,z b be in AP where x+y+z=15...

Let a ,x, y ,z b be in AP where x+y+z=15 Let a ,p,q ,r ,b be in HP where `p^(-1) +q^(-1)+r^(-1)=5/3` What is the value of ab What is the value of xyz What is the value of pqr

Text Solution

Verified by Experts

`x+y+z=15`
`3y=15`
`y=5`
`a+b=10`
We know,
a,p,q,r,b are in HP
`1/a,1/p,1/q,1/r,1/b` are in AP
`1/a+1/b=2/q=10/9`
...
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