What value will the following expression evaluate to? irb(main):010:0 (4 + 7) * 3 - 7 / (2 + 5) ** 2
A) 45
B) 25
C) 33
D) 47

Question

What value will the following expression evaluate to? irb(main):010:0> (4 + 7) * 3 - 7 / (2 + 5) ** 2
A) 45
B) 25
C) 33
D) 47

Quizplus · Accepted Answer

The expression evaluates as follows: First, solve the operations inside the parentheses: (4 + 7) = 11 and (2 + 5) = 7. Then, the expression becomes 11 * 3 - 7 / 7 ** 2. Next, solve the exponent: 7 ** 2 = 49. The expression now is 11 * 3 - 7 / 49. Division comes before subtraction, so solve 7 / 49 = 1/7. Since 1/7 is approximately 0.14 and can be considered negligible for integer arithmetic, the expression simplifies to 11 * 3, which is 33.

What Value Will the Following Expression Evaluate To? Irb(main):010:0> (4