Python noob having a little trouble with strings

[randyliu17]

If s1 = "Welcome students", what is the output when you print the following:

1. s4 = 3 * s1

2. s1[3 : 6]

3. 'W' in s1

4. S1[-1]

5. S1[:-1]

Any help would be great, thanks!
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