0 votes 0 votes $X$ is a $30$ digit number starting with the digit $4$ followed by the digit $7$. Then the number $X^{3}$ will have $90$ digits $91$ digits $92$ digits $93$ digits Quantitative Aptitude gate2017-ee-2 numerical-ability numerical-computation + – Arjun asked Feb 26, 2017 retagged Mar 9, 2021 by Lakshman Bhaiya Arjun 15.9k points answer comment Share See all 0 reply Please log in or register to add a comment.