This week’s puzzles and last week’s solutions: 10 Factors 2014-03-31

77 is a composite number. 77 = 1 x 77 or 7 x 11. Factors of 77: 1, 7, 11, 77. Prime factorization: 77 = 7 x 11.

Sometimes 77 is a clue in the FIND THE FACTORS 1 – 12 puzzles. Even though it has other factors, the puzzle only uses 7 x 11 = 77.