If $A = \{x : x = 3n + 1,\ n = 0, 1, 2, 3\}$, then $A$ is

If $A = \{x : x = 3n + 1,\ n = 0, 1, 2, 3\}$, then $A$ is
  1. $\{1, 4, 7, 10\}$
  2. $\{0, 3, 6, 9\}$
  3. $\{4, 7, 10, 13\}$
  4. $\{1, 4, 7\}$

Solution

For $n = 0,1,2,3$: $3n+1 = 1, 4, 7, 10$.

Asked in: MH-SSC-9

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