Exams

Two pipes A and B can fill an empty cistern in 18 and 27 hours, respectively. Pipe C can drain the entire cistern in 45 hours when no other pipe is in operation. Initially, when the cistern was empty Pipe A and Pipe C were turned on. After a few Pipe A was turned off and Pipe B was turned on instantly. In all, it took 55 hours to fill the cistern. For how many hours was Pipe B turned on?

Raman told Ananth " Day before yesterday I taught the only brother of the daughter of my paternal grandmother". Whom did Raman teach?

In a concave mirror when the object is placed at infinity which of the following applies to the image?

In ΔDEF, G and H are points on side DE and DF respectively. GH is parallel to EF. If G divides DE in the ratio 3:2 and HF is 8 cm, then the length of DF is

What are the co-ordinates of the centroid of a triangle, whose vertices are A(2 , 5), B(-4 , 0) and C(5 , 4)?

The line graph shows the number of deaths due to rail accidents in a certain state. Study the graph and answer the question.

The number of deaths in 2017 were greater than that in 2013 by _________.

Which of the following states does not share a border with Myanmar?

What does the symbol R in electricity stand for ?