1+1=2

Yes, correct. In base-10 arithmetic, 1 + 1 = 2.

If you’re studying for exams, a quick note:

• In binary (base-2): 1 + 1 = 10 (which is decimal 2)
• In modular arithmetic mod 2: 1 + 1 ≡ 0
• In boolean algebra (OR): 1 + 1 = 1

Would you like a few practice problems, or a brief note on how 1+1=2 is derived from the Peano axioms?