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Find the number of arrangement from the ...

Find the number of arrangement from the word ‘MATHS’.

Text Solution

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Case 1
4 letters=0
Case 2
3 letters=0
Case 3
2 letters=`.^3C_2*(4!)/(2!2!)`
Case 4
1 letters=`.^3C_2*(4!)/(2!2!)+.^3C_1*.^7C_2*(4!)/(2!)+.^8C_4*4!`.
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