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1!+2!+...+50!=?
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TCS Other Question
a Girl made a block with small cubes of 8 cubic cm volume to make a block , 3 small cubes long, 9 small cubes wide and 5 small cubes deep. the she realises she used more cubes than she needed.if it were made hollow then minimum number of cubes she needs is:
out of 7 children the youngest is a boy then find the probability that all the remaining children are boys.