Let the positive integers be written in the form :
If the $\mathrm{k}^{\text {th }}$ row contains exactly k numbers for every natural number k , then the row in which the number 5310 will be, is $\_\_\_\_$ .
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If the $\mathrm{k}^{\text {th }}$ row contains exactly k numbers for every natural number k , then the row in which the number 5310 will be, is $\_\_\_\_$ .
