Answer:
Step-by-step explanation:
a. Shade all products in this multiplication table that appear most frequently - 6, 8, 12, 18, and 24. All numbers appear 4 times on the table.
b. 6=3x2=2x3=1x6=6x1
12=4x3=3x4=2x6=6x2
18=9x2=2x9=3x6=6x3
24=4x6=6x4=3x8=8x3
c. The numbers which appear 4 times have two distinct factorizations into single digit numbers (up to the order of the factors): for example, 24=4x6=3×8.
d. The numbers that do not appear in the multiplication table are 11, 13, 17, 19, 23, 29, 31, 37, 39, 41, 43, 47
e. The reason is that they are all prime numbers that are more than 9.