exam Maths Puzzle

If the letters of the word SACHIN are arranged in all possible ways and these words are written out as in dictionary, then the word ‘SACHIN’ appears at serial number:

A.

601

B.

600

C.

603

D.

602

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exam Other Question
A book-shelf can accommodate 6 books from left to right. If 10 identical books on each of the languages A,B,C and D are available, In how many ways can the book shelf be filled such that book on the same languages are not put adjacently.

A.

40P6
6!

B.

10×95

C.

6P4
2!

D.

4×35
In how many ways can 3 men and their wives be made stand in a line such that none of the 3 men stand in a position that is ahead of his wife?

A.

6!
3!×3!×3!

B.

6!
2!×2!

C.

6!
2!×2!×2!

D.

6!
2!×3!