In how many ways can 4 books on quant, 3 books on reasoning and 2 on verbal, all by different publishers, be arranged on a shelf?
Explanation:
As all the books are from different publishers, they are all different.
∴ Required number of ways to arrange the books = Total number of ways to arrange (4 + 3 + 2 =) 9 different books on a shelf = 9! = 362880
Hence, option (a).
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