0 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 2.8k points 1.3k views answer comment Share Follow Print 0 reply Please log in or register to add a comment.