Exams

What is the value of the expression a3 - 5 + 2816a, when a = 2?

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

Her elegance (1)/ makes her (2)/ an attracting lady. (3)/ No error (4)

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

Like a weak old woman

If sin P + cosec P = 2, then the value of sin7P + cosec7P is

In a quadrilateral PQRS, l_S= 90°. A circle (o, r) touches the sides PQ, QR, RS and SP at A, B, C and D respectively. If QR= 38 cm, RS = 25 cm and QA = 27 cm, find 'r'.

If x - y = -9 and xy = -20, then find x2 + y2 ?

Out of the four alternatives, choose the one which can be substituted for the given words/sentences and click the button corresponding to it.

Providing relief

In a ∆ABC, BC is extended upto D, ∡ACD =120°, ∡B = 1/2 A. Then ∡A is