There are 8436 steel balls, each with radius of 1 centimeter, stacked – McqOptions

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1.	There are 8436 steel balls, each with radius of 1 centimeter, stacked in 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
A.	34
B.	38
C.	36
D.	32
Answer» D. 32

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