For the following questions answer them individually
A sum of money doubles itself in 7 years at simple interest. In how much time will it become 5 times of itself?
In the given figure, if PA and PB are tangents to the circle with centre O such that $$\angle APB - 54^\circ$$, then $$\angle OBA $$ =________.
The given table shows the number of new employees joined in different categories of employees in an organization and also the number of employees from these categories who left the organization every year since the foundation of the organization in 2015. Study the table and answer the question that follows.
During the years given, what is the difference between the total number of Business Analysts who joined the organization and the total number of Sales Representatives who joined the organization?
If $$x + y + z = 0$$ and $$x^2 + y^2 + z^2 = 40$$, then what is the value of $$xy + yz + zx$$?
The following pie chart shows the population of 7 villages.
What is the different between the population of villages E and D, if the total population of all the villages together is 50,000?
A dishonest dealer sells the goods at 7% loss on cost price but uses 18% less weight. What is his percentage of profit? (Correct to 2 decimal places)
The average age of six members of a family is 40 years. If the age of a guest is included, then the average age increases by 12.5%.What is the age (in years) of the guest?
If $$\sec A = \frac{5}{4}$$, then the value of $$\frac{\tan A}{1 + \tan^2 A} - \frac{\sin A}{\sec A}$$ is:
If $$\alpha, \beta$$ are the roots of $$6x^2 + 13x + 7 = 0$$, then the equation whose roots are $$\alpha^2, \beta^2$$ is: