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If Kavya is at the 18th position from the top, and at 23rd position from the bottom, it would mean that there are 22 more students after the 18th position. So, total number of students in the class = 18 + 22 = 40. Hence, the correct answer is (C).
A train 130 meters long travelling at 54 km/hr crosses the bridge in 30 sec. Then the length of the bridge is:
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