Exams

The area of a right angled triangle ABC, right angled at B, is 46 sq units. A median is drawn from A to BC which intersects at D. Find the area (in sq. units)of triangle ABD.

The mean of 14 observations is 11. One more observation is included and the new mean becomes 12. The 15th observation is

The average marks obtained by a group of 10 students were 20. One student left the group as a result of which the average of the remaining students rose to 21. But another student joined, as a result of which the average marks of the group dropped a bit and became 20.6. What were the average marks obtained by the student who left and the one who joined?

Assuming that the charge of an electron is 1.6 x 10-19 C, the number of electrons passing through a section of wire per second when the wire carries a current of 1 A is

In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word. 

If in a certain code language, PROMOTION is written as 365458957, how will the word MONITOR be written in that code language?

If sec2A cosec2A = x, then x is

The amount received at 10% per annum compound interest after 3 yrs is Rs 10,648. What was the principal (in Rs)?