Mr. Ng has some notebooks. If he ties them in bundles of 7, he will have 2 extra notebooks. If he ties them in bundles of 9, he would be short of 3 notebooks. What is the smallest possible number of notebooks Mr. Ng has?
Multiples of 7: 7, 14, 21, 28, 35, 42, 49
Multiples of 7 (+2): 9, 16, 23, 30, 37, 44, 51
Multiples of 9: 9, 18, 27, 36, 45, 54
Multiples of 9 (-3): 6, 15, 24, 33, 42, 51
Smallest possible number of notebooks that Mr. Ng has = 51
Answer(s): 51
