a desk contains 12 sheets of paper; 4 white, 2 green, 2 yellow, 2 blue and 2 red. If all the sheets are arranged, how many ways can they be arranged?
Ans;
Total Sheets = 12 sheets
4 white, 2 green, 2 yellow, 2 blue and 2 red
Thus possible arrangement = 4!*2!*2!*2!*2!
= 4*3*2*1*1*2*1*2*1*2*1*2
= 384
thus total 384 different ways 12 sheets cab be arranged.
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