57 Fan bobi-2; Fan bo’limi-1; Qiyinlik darajasi-1
Qavariq linza va botiq ko’zgu uchun to’g’ri formulani aniqlang?
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№58 Fan bobi-2; Fan bo’limi-1; Qiyinlik darajasi-1
Botiq linza va qavariq ko’zgu uchun to’g’ri ifodani aniqlang?
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