Data Handling — Question 29

Question 29

Evaluate the following for each expression that is successfully evaluated, determine its value and type for unsuccessful expression, state the reason.

(a) len("hello") == 25/5 or 20/10

(b) 3 < 5 or 50/(5 - (3 + 2))

(c) 50/(5 - (3 + 2)) or 3 < 5

(d) 2 * (2 * (len("01")))

Answer

(a) len("hello") == 25/5 or 20/10
 ⇒ 5 == 25/5 or 20/10
 ⇒ 5 == 5 or 2
 ⇒ True or 2
 ⇒ True

The type of result is Boolean.

(b) 3 < 5 or 50/(5 - (3 + 2))
 ⇒ True or 50/(5 - (3 + 2))   [∵ first operand is True, second operand is not evaluated so no division by 0 error happens]
 ⇒ True

The type of result is Boolean.

(c) 50/(5 - (3 + 2)) or 3 < 5
 ⇒ 50/(5 - 5) or 3 < 5
 ⇒ 50/0 or 3 < 5
 ⇒ Division by Zero Error

As the denominator of or operator's first operand is 0, Division by Zero error occurs.

(d) 2 * (2 * (len("01")))
 ⇒ 2 * (2 * 2)
 ⇒ 2 * 4
 ⇒ 8

The type of result is Integer.