instruction:
You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.
question:
Question: The parameter of a square is equal to the perimeter of a rectangle of length 16 cm and breadth 14 cm. Find the circumference of a semicircle whose diameter is equal to the side of the square. (Round off your answer to two decimal places)

 Option A: 77.14 cm

 Option B: 47.14 cm

 Option C: 84.92 cm

 Option D: 94.94 cm

 Option E: 23.57 cm
answer:
Option E


question:
Question: If the operation ∆ is defined by a ∆ b = (b - a)^2/a^2 for all numbers a and b, and a ≠ 0, then what is the result when we evaluate this expression: (-5) ∆ (5 ∆ −5) ?

 Option A: 49/9

 Option B: 49/16

 Option C: 81/16

 Option D: 81/25

 Option E: 100/81
answer:
Option D


question:
Question: What is the value of x^2yz − xyz^2, if x = − 2, y = 1, and z = 1?

 Option A:  6

 Option B:  24

 Option C:  30

 Option D:  32

 Option E:  48
answer:

Option A