p & c

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find the number of ways in which the digits of the number 125453752 can be rearranged such that no two 5's come together ?????

#Mathematics #Algebra

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7 Answers

1

big looser ......... ·2009-02-05 09:55:53

helppppppppppppppppp

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11

Subash ·2009-02-05 10:03:15

⁷C₃*(6!/2!)

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big looser ......... ·2009-02-05 10:12:42

ya dude you are correct can you tell how to solve

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11

Subash ·2009-02-05 10:14:59

excluding the 5s there are 6 digits of which 2 are same

we can arrange them in (6!/2!) ways

and 6 things create 7 gaps

the 5s can be placed in these 7 gaps in⁷C₃ ways

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big looser ......... ·2009-02-05 10:20:21

wat does it mean 6 things create 7 gaps

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Subash ·2009-02-05 10:36:21

* 1 * 1 * 1 * 1 * 1 * 1*

see ive typed six ones the number of gaps between them will be ...

shown by the astrixes hope u got it now

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big looser ......... ·2009-02-05 11:04:27

thanks bro

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Your Answer

Basic Integral Calculus Operators Symbols Matrix Cases

√ √ || {} [] () → ~ ^ x x x → → ln log lg lim lim cos sin tan cot arcsin arccos arctan

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