eggs are sold in packages of 6 or 11 only . if doris bought 79 eggs exactly , what could be the number of large packs doris bought ? Choose the correct choice
A) 6 . B) 2 . C) 3 . D) 5 . E) 4 .

Rationale: no strategy involved . simple question demanding fast calculation . 11 x 5 = 55 = > 79 - 55 = 24 = > 24 / 6 is an integer ans d . 5 . good luck
Answer: D