MathDB

Problem 7

Part of 2019 LIMIT Category A

Problems(1)

number of six-digit squares with digits 123456

Source: LIMIT 2019 CAS1 P7

4/28/2021
How many six-digit perfect squares can be formed using all the numbers 1,2,3,4,5,61,2,3,4,5,6 as digits? <spanclass=′latex−bold′>(A)</span> 5<span class='latex-bold'>(A)</span>~5 <spanclass=′latex−bold′>(B)</span> 19<span class='latex-bold'>(B)</span>~19 <spanclass=′latex−bold′>(C)</span> 7<span class='latex-bold'>(C)</span>~7 <spanclass=′latex−bold′>(D)</span> None of the above<span class='latex-bold'>(D)</span>~\text{None of the above}
combinatoricsnumber theory