I.t is known that a box of 800 electric bulbs contains 36 defective bulbs.one bulb is taken at random out of box.what is the probability that the bulb chosen is defective and non defective.
Water in a canal 5.4m wide and 1.8m deep is flowing with a speed of 25km/hr. How much area can it irrigate in 40 min , if 10 CM of standing water is required for irrigation
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