All the numbers that can be formed using the digit 1, 2, 3, 4, 5 are arranged in the decreasing order of magnitude. The rank of 34215 is

Explanation

Here, we are given five numbers. So, number with lowest rank will start from 5.

Rest 4 digits can be arranged in `4!` ways.

After that, we`'`ll take number starting with 4.

They can also be arranged in `4!` ways.

Now, we will take number starting with 3.

Our number 34215 starts with 3 and highest number after 3 is 5.

So, number starting with 35 can be arranged in `3!` ways.

Now, number starting with 345 can be arranged in `2!` ways.

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