Answer:
H.C.F L.C.M
Step-by-step explanation:
Highest common factor- which means the highest COMMON factor of 117 and 221. So technically just find the factors for both then see the highest one for both BUT they have to be common which means both numbers has to have that special set. SAME SET
Lowest Common Multiple- which means the lowest COMMON multiple of 117 and 221. So find the multiple for both numbers and then see the lowest one BUT they have to be common which means both numbers has to have that special SAME set.
Hope this helps