please solve question 19 python

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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please solve question 19 python

**Multiple Choice Questions on Python Programming**

**Question 17:**  
Which of the following options will produce the same output?

```python
tupl1 = (5, 3, 1, 9, 0)

# Options i, ii, iii, or iv
i)   print(tupl1[:-1])
ii)  print(tupl1[0:5])
iii) print(tupl1[0:4])
iv)  print(tupl1[-4:])
```

Options:
- A. i, iii
- B. i, iv
- C. ii, iv
- D. i, ii

---

**Question 18:**  
What is printed by the following statements?

```python
s = "python is awesome"
print(s[2] + s[-5])
```

Options:
- A. tw
- B. o
- C. te
- D. Error

---

**Question 19:**  
What will be printed when the following executes?

```python
str = "This is fun"
str = str[5]
print(str)
```

Options:
- A. " "
- B. is fun
- C. This is fun
- D. i

---

**Question 20:**  
What is printed by the following statements?

```python
s = "python rocks"
print(s[1] * s.index("n"))
```

Options:
- A. yyyy
- B. 55555
- C. y5
- D. TypeError

---

**Detailed Explanation:**

For Question 17, the key is to understand tuple slicing in Python:
- `tupl1[:-1]` returns all elements except the last one: `(5, 3, 1, 9)`.
- `tupl1[0:5]` returns the first five elements: `(5, 3, 1, 9, 0)`.
- `tupl1[0:4]` returns the first four elements: `(5, 3, 1, 9)`.
- `tupl1[-4:]` returns the elements from index -4 to the end: `(3, 1, 9, 0)`.
Hence, the correct answer is A. i, iii.

For Question 18, the string `s = "python is awesome"` and `s[2]` is `
Transcribed Image Text:**Multiple Choice Questions on Python Programming** **Question 17:** Which of the following options will produce the same output? ```python tupl1 = (5, 3, 1, 9, 0) # Options i, ii, iii, or iv i) print(tupl1[:-1]) ii) print(tupl1[0:5]) iii) print(tupl1[0:4]) iv) print(tupl1[-4:]) ``` Options: - A. i, iii - B. i, iv - C. ii, iv - D. i, ii --- **Question 18:** What is printed by the following statements? ```python s = "python is awesome" print(s[2] + s[-5]) ``` Options: - A. tw - B. o - C. te - D. Error --- **Question 19:** What will be printed when the following executes? ```python str = "This is fun" str = str[5] print(str) ``` Options: - A. " " - B. is fun - C. This is fun - D. i --- **Question 20:** What is printed by the following statements? ```python s = "python rocks" print(s[1] * s.index("n")) ``` Options: - A. yyyy - B. 55555 - C. y5 - D. TypeError --- **Detailed Explanation:** For Question 17, the key is to understand tuple slicing in Python: - `tupl1[:-1]` returns all elements except the last one: `(5, 3, 1, 9)`. - `tupl1[0:5]` returns the first five elements: `(5, 3, 1, 9, 0)`. - `tupl1[0:4]` returns the first four elements: `(5, 3, 1, 9)`. - `tupl1[-4:]` returns the elements from index -4 to the end: `(3, 1, 9, 0)`. Hence, the correct answer is A. i, iii. For Question 18, the string `s = "python is awesome"` and `s[2]` is `
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