45|2

I’m not sure which meaning you intend by “45|2.” Here are common interpretations and results:

• Divisibility (a | b means a divides b): 45 does not divide 2. false.
• If you meant “2 divides 45”: false (45 is odd).
• Bitwise OR (in programming): 45 | 2 = 47.
• If you meant “45 choose 2” (binomial coefficient): 45C2 = 990.
• If you meant 45 mod 2: 1.
• gcd and lcm: gcd(45, 2) = 1; lcm(45, 2) = 90.

Which interpretation did you intend? I can explain any one in more detail.