FIA Assistant Director Paper 2020

If 10% of the workers were fired, then 90% remained. Given that 540 workers survived, we can set up the equation 0.9 × total_workers = 540. Solving for total_workers gives 540 ÷ 0.9 = 600 workers originally.

Option B is grammatically correct and fits the sentence structure properly: 'Our father advised us not to be sad as he thought that his decision would bring betterment in the long run.' The phrase 'not to be sad' correctly follows the verb 'advised' in reported speech.

The first person completes 1/10 of the work per day, and the second person completes 1/15 per day. Together, they complete 1/10 + 1/15 = 1/6 of the work per day, so they finish the work in 6 days.

The average speed for a round trip when distances are equal is given by the harmonic mean: 2 × (100 × 150) / (100 + 150) = 120 km/h. Hence, option D is correct.

The United Nations officially recognizes six working languages: Arabic, Chinese, English, French, Russian, and Spanish. Therefore, the correct answer is 6.

Twelve men take 6 hours, so total work = 12 × 6 = 72 man-hours. After 1 hour, 12 men complete 12 man-hours, leaving 60 man-hours. Now 20 men work on the remaining 60 man-hours, so time needed = 60 ÷ 20 = 3 hours. However, the options do not include 3 hours as the correct answer for the remaining time after the first hour. Rechecking: After 1 hour, work done = 12 men × 1 hour = 12 man-hours. Remaining work = 72 - 12 = 60 man-hours. With 20 men working, time = 60 ÷ 20 = 3 hours. The correct answer is 3 hours, which corresponds to option A, not C. Therefore, correct_answer should be A.

The number series follows the pattern where each term is obtained by multiplying the previous term by 3 and then subtracting 3. Specifically: 3 × 3 - 3 = 6, 6 × 3 - 3 = 15, 15 × 3 - 3 = 42, 42 × 3 - 3 = 123, and 123 × 3 - 3 = 366. Therefore, the missing number in the series is 42, which corresponds to option C.

Italy is famously recognized on the world map for its distinctive boot-like shape, often described as a long shoe. None of the other options have a similar shape or are commonly described this way.

The word 'bleak' means cold, desolate, or lacking in warmth and cheer. The opposite is 'bright,' which conveys light, cheerfulness, and positivity. Therefore, option C is the correct antonym.

Canada is one of the world's largest producers of uranium, historically ranking among the top producers globally. France and South Africa produce uranium but not at the scale of Canada. 'None of these' is incorrect since Canada is listed as an option.