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MathsJEE Main 4 Apr 2026, Shift 2·Q17·MCQ·Easy–moderate

Permutations & Combinations · Non-negative integer solutions

Let A={(a,b,c):a,b,cA = \{(a, b, c) : a, b, c are non-negative integers and a+b+2c=22}a + b + 2c = 22\}. The n(A)n(A) is equal to:
  1. (1)121
  2. (2)124
  3. (3)144
  4. (4)169

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