0 votes 0 votes How many pairs $(a,b)$ of positive integers are there such that $a \leq b$ and $ab = 4^{2017} \; ?$ $2017$ $2019$ $2020$ $2018$ Quantitative Aptitude cat2020-set3 quantitative-aptitude algebra + – soujanyareddy13 asked Sep 17, 2021 • edited Mar 23, 2022 by Lakshman Bhaiya soujanyareddy13 2.7k points 271 views answer comment Share See all 0 reply Please log in or register to add a comment.