Class X Exam Prep
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Class X Exam Prep
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.
A sum of money doubles itself in 5 years at compound interest. In how many years will it become 8 times itself?
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20
The full exam-length answer is in the app.
A frog starts at 0 on a number line. It makes ten jumps of lengths 1, 2, 3, ..., 10 units, in this order. Each jump may be to the left or to the right. How many different final positions are possible?
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56
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Weights may be placed on either pan of a balance. What is the least number of weights needed to weigh every whole-number load from 1 kg to 40 kg in one weighing?
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4
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A knight starts on one corner square of an $8 \times 8$ chessboard. Can it make a sequence of knight's moves that lands on every one of the 64 squares exactly once and finishes on the corner square diagonally opposite its start?
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No — the two corners are the same colour, but 63 knight moves must finish on the opposite colour
The full exam-length answer is in the app.
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