self Maths Puzzle

find the number of consecutive zeroes at the end of 100!*200!*300!

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self Other Question

what least no should be subtracted from 1690 so that it is divisible by 69. When an article is sold for Rs 703 loss incurred is 25% less than the profit earned on selling it at Rs 836. What is the selling price of the article when it earns a profit of 20%?