Which of the following technologies is NOT mentioned as

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?

Select the number from the given options which will come in place of the question mark (?) in the following series. 

6, 12, 14, 28, 30, 60, ?

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

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

A machine bought at Rs. 50,000 falls in its value by 8% of its value every year. Find the value of the machine after 2 years.

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?

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?

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

35x⁵ y³ z⁴, 49x² yz³, 14xy² z²