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1. What does this program print? ``

python
def next_row(prev):
    nxt = [1]
    for i in range(len(prev) - 1):
        nxt.append(prev[i] + prev[i + 1])
    nxt.append(1)
    return nxt


row = [1]
for _ in range(4):
    row = next_row(row)
print(row)

``

[1, 3, 3, 1][1, 4, 4, 1][1, 4, 6, 4, 1][1, 5, 10, 10, 5, 1]

2. What is the last line printed? ``

python
def choose(n, k):
    result = 1
    for i in range(k):
        result = result * (n - i) // (i + 1)
    return result


print(choose(12, 4))
print(choose(6, 2))

``

4952102015

3. What does this program print? ``

python
def find_position(target):
    row = 1
    first_of_row = 1
    while first_of_row + row - 1 < target:
        first_of_row += row
        row += 1
    column = target - first_of_row + 1
    return row, column


row, column = find_position(20)
print(f"20 is in row {row}, column {column}")

``

20 is in row 6, column 520 is in row 5, column 520 is in row 6, column 420 is in row 4, column 5

4. The Floyd's triangle program prints each number with print(next_number, end=""). Which keyword argument of print stops it from adding a line break? Give the name only.

Type your answer.

5. The counter in Floyd's triangle is not named next. Which built-in function would that name hide? Give the name only.

Type your answer.

Triangles