In how many different ways can the letters of the word 'ARISE' be arranged?

In how many different ways can the letters of the word "ARISE"be arranged?
1). 90
2). 60
3). 180
4). 120

The word 'ARISE' has 5 different letters

=> Required number of arrangements = $5!$

= $5 \times 4 \times 3 \times 2 \times 1 = 120$

$= 5!$

= $5 \times 4 \times 3 \times 2 \times 1 = 120$

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