Exams

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

If tan A = 1/2 and tan B = 1/3, then what is the value of tan (2A + B)?

Among three numbers, the first is twice the second and thrice the third. If the average of three numbers is 429, then what is the difference between the first and the third number?

A student multiplied a number by 6/7 instead of 7/6. What is the percentage error in the calculation?

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.

To delay or prevent someone or something by obstructing them

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

He had had a short illness, there (had been) a brief time of acute suffering, then all was over.

In the given figure, in a right angle triangle ABC, AB = 12 cm and AC = 15 cm. A square is inscribed in the triangle. One of the vertices of square coincides with the vertex of triangle. What is the maximum possible area (in cm.sq) of the square?

If 2x + 6y = 3xy and 10x -­ 3y = 4xy, find x, y.