Questions
The harmonic mean of two numbers is 4. Their arithmetic mean is A and geometric mean is G. If G satisfies then the numbers are
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a
1, 13
b
9, 12
c
3, 6
d
4, 8
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Correct option is C
2aba+b=4,a+b2=A ab=G 2A+G2=27⇒a+b+ab=27 ⇒a+b+2a+b=27 ⇒a+b=9 ⇒ab=18 ⇒the numbers are 3,6Similar Questions
If ,then is
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