For the following questions answer them individually
What is the value of $$3 \sin^2 30^\circ + \frac{3}{5} \cos^2 60^\circ - 2 \sec^2 45^\circ$$?
An article is sold at 25 percent loss. If its cost price is doubled and selling price is increased by ₹ 660, then there is a profit of 20 percent. What is the original cost price of the article?
Sum ₹ 20000 and ₹ 40000 are given on simple interest at the rate of 10 percent and 15 percent per annum respectively for three years. What will be the total simple interest?
The bar chart given below shows the discount percentage offered by a shopkeeper on seven articles. Selling price of these seven articles : A1, A2, A3, A4, A5, A6 and A7 is Rs. ₹ 420, ₹ 600, ₹ 816, ₹ 825, ₹ 425, ₹ 800 and ₹ 840.
Selling price - Marked price $$\left[1 - \frac{Discount \ percent}{100}\right]$$
What is the sum of the marked price of these seven articles?
What is the value of $$99\frac{11}{99}+99\frac{13}{99}+99\frac{15}{99}+......+99\frac{67}{99}$$?
Which fraction among the following is the least?
$$\frac{5}{11}, \frac{7}{12}, \frac{8}{13}, \frac{9}{17}$$
The radius of a solid sphere is 42 cm. It is melted to form identical small solid spheres whose radius is 7 cm. What is the number of small solid spheres obtained?
The pie chart given below shows the number of males in 6 departments. Number of males in a particular department are shown in the terms of degrees with respect to the total number of males in all the 6 departments. Number of males in department S are 1080.
J = Total number of males in T and P
K = Difference between the number of males in P and Q
What is the value of J + K?