If A = 2n + 13, B = n + 7, where n is a natural number then HCF of A and B is:

 $\frac{441}{2^2\times5^3\times7}$  this number has what kind of decimal expansion.

The least number that is divisible by all the numbers from 1 to 10 (both inclusive) is

 $\frac{14587}{1250}$ 

 The decimal expansion of the above rational number will terminate after

Zeroes of a polynomial can be determined graphically. No. of zeroes of a polynomial is equal to no. of points where the graph of polynomial

Find the ratio in which the line joining the points (6, 4) and (1, –7) is divided by x-axis.

The radius of curvature of a mirror is 20cm. The focal length is

A concave mirror gives virtual, refract and enlarged image of the object but image of smaller size than the size of the object is

Movement of the synthesized products from the leaves to the roots and other parts of a plant’s body takes place through the phloem. This process is known as:

The vein which brings clean blood from the lungs into the heart is known as:

Which of the following help in protecting the inner lining of the stomach from the harmful effect of hydrochloric acid?

The nature of calcium phosphate present in tooth enamel is

The function of quick lime in soda lime mixture is to ---------------.