Free Online Tool to Find Set Difference (n(A − B))

Set Difference (n(A − B)) — Embed Tool

Calculate n(A − B)

Enter elements of Set A and Set B (comma-separated). The tool computes A \ B (elements in A not in B) and its count.

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Elements are trimmed and duplicates in A will be ignored for counting. Use text or numbers. Commas separate elements.
Elements are trimmed. Elements matching A (exact match) will be removed from the difference.
Touch friendly buttons • Dynamic result
Result — A − B
Count
0
Example inputs
A = 1, 2, 3, 4
B = 3, 4, 5
Result (A − B) = 1, 2 and n(A − B) = 2.
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