A costume designer has 36 bat buttons and 18 black cat buttons she must use to create costumes
To find the largest number of costumes we take GCF
GCF gives the largest and greatest number of grouping
WE find GCF of 36 and 18
1, 2, 3, 6, 9, 18 are the factors of 18
1, 2, 3, 4, 6, 9, 12, 18, 36 are the factors of 36
Greatest common factor GCF is 18
So , 18 is the largest number of costumes she can make.