CAT Quant Practice Problems

Question: There are 8436 steel balls, each with a radius of 1 centimeter, stacked in a pile, with 1 ball on top, 3 balls in the second layer, 6 in the third layer, 10 in the fourth, and so on. The number of horizontal layers in the pile is
  1. 34
  2. 38
  3. 36
  4. 32

Correct Option:3

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