Multiple choice

What is the value of A(15, 2)?

  1. 15

  2. 2

  3. 5

  4. 42
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Using the rule A(m, n) = 5 if m < n, and A(m, n) = A(m-n, n+2) if m >= n: A(15, 2) = A(13, 4) = A(11, 6) = A(9, 8) = A(7, 10). Since 7 < 10, the result is 5.

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