$$ {tan7°tan23°tan60°tan67°tan83°}$$ is equal to-

The graphs of x = a and y = b intersect at 

Each interior angle of a regular polygon is 144⁰. The number of sides of the polygon is 

The least number, which is a perfect square and is divisible by each of the numbers 16, 20 and 24 is 

A sum of money lent out at simple interest amounts to ₹720 after 2 years and 1020 after a further period of 5 years. Find the principal. 

Allowing 20 % and 15 % successive discounts, the selling price of an article becomes ₹ 3,060; then the marked price will be: 

Kundan, Dharma and Guard start a venture together. Dharma and Guard invest 4,000 and 3,000 respectively while Kundan invests 1,000 initially and after 6 months withdraws his capital and decides to work as working partner with 30% stake in the profit. If Kundan gets 800 at the end of the year, what was the total profit? 

Directions:  The table given below presents the number of books on different subjects kept on separate shelves subjects with odd and even numbers are of arts and Science respectively

What is the ratio of the total numbers of books on arts to that of science?