If A = {a, c, e, g} and B = {b, c, d, g}, what is B − A?
Answer and explanation
Correct answer: {b, d}
For B − A, begin with the elements of B and remove every element that also appears in A. From B = {b, c, d, g}, the elements c and g are removed because they are in A. The elements b and d are not in A, so they remain. Therefore B − A = {b, d}. Reversing the order would produce a different set.
Frequently asked questions
What is the correct answer to this question?
{b, d}
Why is this the correct answer?
For B − A, begin with the elements of B and remove every element that also appears in A. From B = {b, c, d, g}, the elements c and g are removed because they are in A. The elements b and d are not in A, so they remain. Therefore B − A = {b, d}. Reversing the order would produce a different set.
Which subject and chapter does this question cover?
This is a Class 12 Mathematics question. Chapter: Sets.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
