16 men can reap a field in 30 days. In how many days will 20 men reap the field?

If Rs. 6,000 amounts to Rs. 7,200 in 4 years, then the rate of interest is

The supplement of right angle is always

x²- 12x + 36 is equal to

Area of a room is 400 sq. m. If the length of tile is 20 cms. and breadth is 10 cm., the number of tiles required is

A man sold a horse for Rs. 360 losing 4 % of the cost price. How much does he pay for the horse?

Coefficient of y in - 3xy + 5 is

The ratio of the number of male and female teachers in a school is found to be 2 : 3. If there are 20 male teachers, the number of female teachers are 

Write the smallest whole number

Write the degree of the polynomial x²yz-3xy²-z²

The decimal notation of 

Find the value of (-1)⁴⁹(1)¹⁰⁰

8⁰x7^{1= _............}

Diameter of a circle is 

The sides of two squares are in the ratio 3:4.The ratio of their areas is

There are 50 children in a village out of 450 people,the part of adult is

A ray of light falls on a plane mirror with an angle of incidence equal to 60°. The angle of reflection is