If x = 2 then the value of x³ + 27x² + 243x + 631 is

$${\sqrt{4×?}}={160\over 10}$$

The product of the zeroes of the quadratic polynomial x²+7x+ 10 is

X can finish a work in 25 days. Y can do the same work in 20 days. Together they work for 5 days and then X leaves. In how many days can Y alone complete the remaining work?

Directions : The bar graph, given here, shows the demand and production of colour televisions of five companies for Diwali season in the year 2009. Study the graph carefully and answer the questions based on the graph.

The ratio of companies having more demand than production of colour televisions to those having more production than demand is :

Find the average of 1.11, 0.01, 0.101, 0.001, 0.11

If the arcs of square length in two circles subtend angles of 60° and 75° at their centres, the ratio of their radii is 

A man had ₹ 16,000, part of which he lent at 4% and the rest at 5% per annum simple interest. If the total interest received was 700 in one year, the money lent at 4% per annum was