For the following questions answer them individually
If the value of $$\sqrt{5}=2.236$$ then calculate the value of $$\sqrt{405}-\frac{1}{2}\sqrt{80}-\sqrt{125}$$
Determine the value of 'x' in $$x=\frac{1}{1+\sqrt{2}}+\frac{1}{\sqrt{2}+\sqrt{3}}+\frac{1}{\sqrt{3}+2}$$
The figure shown below consists of the tangents at the extremities of any chord Choose the correct option given below
Calculate the angle subtended by the chord at the point on the major arc if the radius and the chord of the circle are equal in length.
The ratio of two numbers is 3 : 7. If their product is 1344, then what is the sum of both the numbers?
P and Q invested some money in a business in the ratio of 4 : 7 respectively. After 6 months P withdraws his capital. If they receive profits in the ratio of 4 : 21, then for how many months did Q invest in the business?
A boy buys 5 pencils at Rs 3 each, 3 erasers at Rs 2 each and 3 sharpeners at Rs 5 each. What is the average expenditure (in Rs) per article?