Clue: Empty, in math

Answer: NULL

Length: 4

---

Similar Clues:

• Intro to math? (AFTER with 5 letters)
• Math subj. with integrals (CALC with 4 letters)
• Math course, informally (CALC with 4 letters)
• Math course with derivatives and integrals (CALC with 4 letters)
• Differential or integral math subj. (CALC with 4 letters)
• Introducer of the math symbol "e" (EULER with 5 letters)
• Math initials (e.g. LCD with 3 letters)
• Math game involving counters (NIM with 3 letters)
• Math game involving the removal of objects (NIM with 3 letters)
• Empty information (NOISE with 5 letters)