Question

which python expression results in 49?
7 // 2
7^2
7*2
7**2

Explanation:

Step1: Analyze 7 // 2

In Python, the // operator is the floor - division operator. $7//2 = 3$ since $7\div2 = 3.5$ and the floor function returns the largest integer less than or equal to 3.5.

Step2: Analyze 7^2

In Python, the ^ operator is the bitwise XOR operator. It is not an exponentiation operator. The result of $7^2$ is not related to exponentiation in the normal arithmetic sense.

Step3: Analyze 7*2

The * operator is the multiplication operator. $7*2=14$.

Step4: Analyze 7**2

In Python, the ** operator is the exponentiation operator. $7**2 = 7\times7=49$.

Answer:

$7**2$