1.

What is the least possible number which must besubstracted form 16, 19 and 23 so that the resulting numbers are in continued proportion?

Answer»

2
4
6
7

Solution :Going through potions, we find option (d) is correct.
Alternatively (16 - x) : (19 - x) :: (19 - x) : (23 - x)
`implies (19 - x)^2 = (16 - x)(23 - x)`
By SOLVING the above equation, we GET x = 7b


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