Week 7 Programming in Python Questions | Prasnya

Programming in Python > Week 7

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14Q

You have a list of lists. You want to compute the sum of all even numbers greater than 3. Consider the two code snippets below, with the condition left blank. Which conditions, when filled in the blanks in both snippets, will give the correct result? Snippet 1 ``` s = 0 for row in data: for val in row: ____: s += val print(s) ``` Snippet 2 ``` s = 0 i = 0 while i < len(data): j = 0 while ____: if data[i][j] % 2 == 0 and data[i][j] > 3: s += data[i][j] j += 1 i += 1 print(s) ```

26 October 2025

What is the value of `out1` after executing the code?

26 October 2025

What is the value of `out2` after executing the code?

26 October 2025

What is the value of `output` after executing the given code snippet?

In the given code, if we change the condition to `if element % 2 == 0` at line 7, then what is the value of `output` after executing it?

What is the first line of the output?

What is the second line of the output?

What is the output of the following snippet of code? ``` P = [[1, 2], [4, 3]] Q = [[4, 1], [9, 3]] R = [] for i in range(2): row = [] for j in range(2): if P[i][j] - Q[i][j] > 0: row.append(1) elif P[i][j] == Q[i][j]: row.append(0) else: row.append(-1) R.append(row) print(R) ```

29 October 2023

What is the output of the following snippet of code? ``` p = 1 M = [[1, 3, 4], [2, -1, 3], [-2, 1, 2]] m = len(M) n = len(M[0]) for i in range(m): for j in range(n): p = p * M[i][j] print(p) ```

29 October 2023

Select all matrices, represented as lists of lists `M`, for which the above snippet of code prints `True` to the console. ``` # Look at the options for the value of M n = len(M) flag = True for i in range(n): for j in range(n): if (i != j) and (M[i][j] != 0): flag = False break elif (i == j) and (M[i][j] != 1): flag = False break if flag == False: break print(flag) ```

Multiple correct

Select all matrices `M` for which the following code prints `True` to the console. ``` n = len(M) flag = True for i in range(n): for j in range(n): if (i != j) and (M[i][j] + M[j][i] != 0): flag = False print(flag) ```

Multiple correct

16 October 2022

NOTE: Enter your answer to the nearest integer. `R` is a zero-matrix, all entries are zeros, of size

3 \times 3

. Let ``` P = [[1, 2, 3], [4, 5, 6], [7, 8, 9]] Q = [[1, 1, -1], [1, 1, -1], [1, 1, -1]] R = [[0, 0, 0], [0, 0, 0], [0, 0, 0]] ``` What is the output of the following snippet of code? ``` val = 0 for i in range(3): for j in range(3): R[i][j] = P[i][j] * Q[i][j] val = val + R[i][j] print(val) ```

16 October 2022

Select all matrices `M` for which the following code prints `True` to the console. ``` # Look at the options for the value of M n = len(M) flag = True for i in range(n): for j in range(n): if (i != j) and (M[i][j] != M[j][i]): flag = False print(flag) ```

Multiple correct

`M` is a matrix, represented as a list of lists, that has already been defined. The dimension of `M` is

m imes n

. Assume that both

m

n

are greater than or equal to

2

and all elements of `M` are integers. Select all correct options about the code given below. ``` # M is a matrix (list of lists) that has already been defined n = len(M[0]) flag = True for i in range(n): if M[0][i] - M[-1][i] != 1: flag = False print(flag) ```

Multiple correct

Programming in Python > Week 7

All PYQs

Topic-Wise PYQs Start Weekly Test

Mock tests

Week mock Topic mock Subject mock

14Q

You have a list of lists. You want to compute the sum of all even numbers greater than 3. Consider the two code snippets below, with the condition left blank. Which conditions, when filled in the blanks in both snippets, will give the correct result? Snippet 1 ``` s = 0 for row in data: for val in row: ____: s += val print(s) ``` Snippet 2 ``` s = 0 i = 0 while i < len(data): j = 0 while ____: if data[i][j] % 2 == 0 and data[i][j] > 3: s += data[i][j] j += 1 i += 1 print(s) ```

26 October 2025

What is the value of `out1` after executing the code?

26 October 2025

What is the value of `out2` after executing the code?

26 October 2025

What is the value of `output` after executing the given code snippet?

In the given code, if we change the condition to `if element % 2 == 0` at line 7, then what is the value of `output` after executing it?

What is the first line of the output?

What is the second line of the output?

What is the output of the following snippet of code? ``` P = [[1, 2], [4, 3]] Q = [[4, 1], [9, 3]] R = [] for i in range(2): row = [] for j in range(2): if P[i][j] - Q[i][j] > 0: row.append(1) elif P[i][j] == Q[i][j]: row.append(0) else: row.append(-1) R.append(row) print(R) ```

29 October 2023

What is the output of the following snippet of code? ``` p = 1 M = [[1, 3, 4], [2, -1, 3], [-2, 1, 2]] m = len(M) n = len(M[0]) for i in range(m): for j in range(n): p = p * M[i][j] print(p) ```

29 October 2023

Select all matrices, represented as lists of lists `M`, for which the above snippet of code prints `True` to the console. ``` # Look at the options for the value of M n = len(M) flag = True for i in range(n): for j in range(n): if (i != j) and (M[i][j] != 0): flag = False break elif (i == j) and (M[i][j] != 1): flag = False break if flag == False: break print(flag) ```

Multiple correct

Select all matrices `M` for which the following code prints `True` to the console. ``` n = len(M) flag = True for i in range(n): for j in range(n): if (i != j) and (M[i][j] + M[j][i] != 0): flag = False print(flag) ```

Multiple correct

16 October 2022

NOTE: Enter your answer to the nearest integer. `R` is a zero-matrix, all entries are zeros, of size

3 \times 3

. Let ``` P = [[1, 2, 3], [4, 5, 6], [7, 8, 9]] Q = [[1, 1, -1], [1, 1, -1], [1, 1, -1]] R = [[0, 0, 0], [0, 0, 0], [0, 0, 0]] ``` What is the output of the following snippet of code? ``` val = 0 for i in range(3): for j in range(3): R[i][j] = P[i][j] * Q[i][j] val = val + R[i][j] print(val) ```

16 October 2022

Select all matrices `M` for which the following code prints `True` to the console. ``` # Look at the options for the value of M n = len(M) flag = True for i in range(n): for j in range(n): if (i != j) and (M[i][j] != M[j][i]): flag = False print(flag) ```

Multiple correct

`M` is a matrix, represented as a list of lists, that has already been defined. The dimension of `M` is

m imes n

. Assume that both

m

n

are greater than or equal to

2

and all elements of `M` are integers. Select all correct options about the code given below. ``` # M is a matrix (list of lists) that has already been defined n = len(M[0]) flag = True for i in range(n): if M[0][i] - M[-1][i] != 1: flag = False print(flag) ```

Multiple correct