Maths-
General
Easy

Question

If S subscript 1 equals left curly bracket 1 right curly bracket comma S subscript 2 equals left curly bracket 2 comma 4 right curly bracket comma S subscript 3 equals left curly bracket 3 comma 6 comma 9 right curly bracket S subscript 4 equals left curly bracket 4 comma 8 comma 12 comma 16 right curly bracket comma horizontal ellipsis horizontal ellipsis

then sum of the numbers in the set  is

  1. 450
  2. 550
  3. 475
  4. 575

The correct answer is: 550

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