Odd number even number 〇 × check task 5×5 (20 sheets)
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Odd number even number 〇 × check task 10×5 (20 sheets)
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Odd number even number 〇 × check task 10×10 (20 sheets)
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Odd number even number 〇 × check task 10×20 (20 sheets)
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Odd number even number 〇 × check task 20×20 (20 sheets)
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