Himanshi bought a t-shirt at 20% discount on its marked price but sold it at the marked price. What is the gain or loss percent on the whole transaction?
If α and β are the roots of the quadratic equation (5+\(\sqrt{2}\)​)x2−(4+\(\sqrt{5}\))x+(8+2\(\sqrt{5}\)​)=0 then the value of \(\frac{2\alpha\beta}{\alpha+\beta}\) is :
Consider the following statement and conclusions and decide which of the conclusions logically follows from the statement.
Statement:
Of all the mobile brands, Samsung’s sales are the highest.
Conclusions:
I. The market share of other mobile brands is known.
II. No other mobile brand is popular.
