Exam Maths Puzzle Numerical Ability

In how many ways the digit of the number 2233558888 be arranged so that the odd digits are placed in even positions

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Exam Other Question

A and B can fill a cistern in 7.5minutes and 5minutes respectively and C can carry off 14 litres per minute.If the cistern is already full and all the three pipes are opened,then its emptied in 1 hour.How many litres can it hold? 2,3,5,11,23,29,41,53,83,89,_