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Q.

If the letters of the word SACHIN are arranged in all possible ways and these words are written out as in dictoionary, then the word SACHIN appers at serial number is

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a

601

b

600

c

603

d

602

answer is A.

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Detailed Solution

Rank of Question Image  (short cut)

Rank of the word 5×5!+0×4!+0×3!+0×2!+0×1!+0×0!+1

=601

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If the letters of the word SACHIN are arranged in all possible ways and these words are written out as in dictoionary, then the word SACHIN appers at serial number is