there are certain balls in the form a pyramid 1st layer has 1
ball ,2nd layer has 3 balls, 3rd layer has 6 balls ,4th layer
has 10 balls and so on. if there are total 8460 balls.how many
layers does tha pyramid has?



there are certain balls in the form a pyramid 1st layer has 1 ball ,2nd layer has 3 balls, 3rd lay..

Answer / d.simson from coimbatore, indi

423

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