There are 2235 students in a school. Among them 1275 students are in group A and 215 students are in group B. Remaining students are in groups C. What is the percentage of students in group C

If A : B =7 : 8, B : C = 24 : 9 Find A : B : C

The angles of a triangle are in the ratio 3;4:5, find the angles

Volume of a right circular cone is 1782 cm³. Its heights is 21 cm. Find the radius of the cone 

The ratios of the respective heights and the respective ratio of two cylinders are 1:2 and 2:1 respectively. Then their respective volumes are in the ratio

What is the product of 7th and 10th terms of the sequence defined by 

a_n={1(n+5,      if n∈ N and n is even

       {2n/n₂+1, if n∈N and n is odd