Question
Given below are sentences with an error in each. The
error is in one part of the sentence. Below each sentence are given the options containing the parts of the sentences. Choose the option which contains the error. Amid the heart of the bustling metropolis, amidst the towering skyscrapers that reached for the heavens with their glinting glass facades, a labyrinthine network of narrow alleyways and hidden courtyards existed, each bearing witness to the whispers of history and the stories of those who had tread upon their ancient cobblestones.Solution
There is an inaccurate use of a preposition ‘amid’ in the beginning of the sentence. It should be replaced with ‘in’. We use ‘amid’ to focus that something or someone is surrounded by something while ‘in’ shows a position or a location.
If sin (A + B) = cos (A + B), what is the value of tan A?

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Sides of a parallelogram are in the ratio 4:3. Its area is 432 sq. units. Altitude on the greater side is 12 units. Altitude on the smaller side is:Â