अनेक राष्ट्रों से

Find the missing number

2, 4, 12, 48, 240, .....

Find the G.C.D. of the following:

35x⁵ y³ z⁴, 49x² yz³, 14xy² z²

The value of a motor cycle 2 years ago was ₹ 70,000. It depreciates at the rate of 4% p.a. Find its present value.

A can do a piece of work in 20 days and B can do it in 30 days. How long will they take to do the work together?

If Karkuzhali earns ₹ 1,800 in 15 days, then she earns ₹3,000 in ___________days.

If a/b = 3/5, b/c = 4/7 then a:b:c is

Find the LCM of pair of the following polynomials x⁴ – 27a³ x, (x-3a)², whose GCD is (x-3a)

The breadth of a rectangular field is 60% of its length. If the perimeter of the field is 800 m, what is the area of the field?

The curved surface area of a right circular cone of height 15 cm and base diameter 16 cm is

10 lakh candidates write the TNPSC Exam this year. If each exam centre is allotted with 1000 candidates. How many exam centres would be needed?