2+2=5?

No. In standard arithmetic, 2 + 2 = 4.

A few quick variants you might see:

• Base 10 (normal): 2 + 2 = 4.
• Base 4: 2 + 2 = 10 (since 4 decimal = 10 in base 4).
• Base 3: 2 + 2 = 11 (which is 4 in decimal).
• Base > 4: 2 + 2 = 4 (still represented as 4 in that base).
• Unary (tally marks): also 4.

Note: “2 + 2 = 5” is famous as a propaganda/example from Orwell’s 1984, not a true arithmetic result.

Want a quick practice problem in a specific base or context?