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[3] [2] [5] [9] [7]

forget about the given restriction
how many total ways can you arrange 5 cards in a row ?

[3] [2] [5] [9] [7] every one of this is card

how i solve it by calc plz

|dw:1441093148752:dw|

scientific calc

card are 3 ,2,5,9,7

\(120\) is the total number of arrangements with out any restrictions

what of meaning of teamvier i m new in open study

The answer is 72...but I don't know how they got the answer not 120 i too keep the answer 120

ok how i keep the answer

72

lets find number of arrangements in which the first card is [5]

then wh

24

Yes, so there are 24 ways in which the first card can be [5]

similarly how many ways there such that last card is [5] ?

24

|dw:1441094262332:dw|

subtract that from the total ways, 120

72

thanks man u are the best

but what of meaning of teamvier i m new in open study