Exam Prep for Class X
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What you'll study, topic by topic
Exam Prep for Class X
Sample questions with model answers
Every question in the paper gets a full exam-length answer in the app — organised by marks, the way a topper writes it.
12 men can finish a piece of work in 10 days, working 8 hours a day. How many days will 20 men take to finish it, working 6 hours a day?
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6
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Vessel P has milk and water in the ratio 3 : 1. Vessel Q has them in the ratio 1 : 1. Equal volumes from P and Q are mixed. What is the ratio of milk to water in the mixture?
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5 : 3
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At what time between 4 o'clock and 5 o'clock do the hour hand and the minute hand of a clock coincide?
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4:21 9/11
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The numbers 1, 2, 3, ..., 20 are written on a board. In one move you rub out any two of the numbers and write down their (non-negative) difference instead, so the count of numbers on the board drops by one each time. After 19 moves a single number is left. What can you be certain of about that final number?
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It must be even
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