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CBSE Class 11-science Answered

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Asked by nitishkrnehu09 | 10 Dec, 2017, 10:37: PM
answered-by-expert Expert Answer
Here you have to make cases to find permutations the number of letters between z and y is less than those between y and x.
Such as
 
z__________y______________x
x_____________y___________z
etc.
then find the number of permutations in each cases add them.
Answered by Sneha shidid | 15 Dec, 2017, 02:03: PM

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