MathematicsSetsWAEC
n(U) = 30 and n(A) = 18. Find n(A′).
Show answer
Answer: C. 12
n(A′) = 30 − 18 = 12.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.
Mathematics · Sets
Discussion
Ask about a step, share a shortcut, or explain it your way. Be kind; no links.
No comments yet. Be the first to explain it.
More Sets questions
- In a class of 45 students, 28 like Mathematics, 22 like English and 9 like both. How many like neither?
- In a class of 40 students, 25 offer Biology and 20 offer Chemistry. If every student offers at least one of the two subjects, how many offe…
- A = {x : x is a factor of 12}. Find n(A).
- If A is a subset of B, then A ∩ B is equal to
- If U = {1, 2, …, 10} and P = {prime numbers in U}, then n(P′) is