If a/b = 4/5 and b/c = 15/16, then (c²-a²) / (c²+a²) is:

Divide ₹600 among A, B and C such that ₹40 more than 2/5 of A's share, ₹20 more than 2/7 of B's share and ₹10 more than 9/17 of C's share are all equal.

If A : B = 1/2 : 3/8, B : C = 1/3 : 5/9 and C : D = 5/6 : 3/4, then A : B : C : D is:

The incomes of A, B, and C are in the ratio 7 : 9 : 12 and their expenditures are in the ratio 8 : 9 : 15. If A saves 1/4th of his income, find the ratio of their savings.

A sum of ₹1300 is divided among A, B, C and D such that A's share / B's share = B's share / C's share = C's share / D's share = 2/3. Find A's share.

In April 2026, which country successfully tested 'Project Kuiper-2', an advanced low-earth orbit (LEO) satellite constellation for high-speed internet?

If a : b = c : d = e : f = 1 : 2, then (3a + 5c + 7e) : (3b + 5d + 7f) is equal to:

If A : B = 1/2 : 3/8, B : C = 1/3 : 5/9 and C : D = 5/6 : 3/4, then find A : B : C : D.

If a, b, c are in continued proportion, then (a² + b²) / (b² + c²) is equal to: