Here are some number patterns and sequences. Try to figure out the pattern and determine what number belongs in the space with the “?” question mark. Hit the “+” at the bottom for answers, but please, after doing these puzzles.
?= 21 The differences are 4, 7, 10, 13, 16
?=34 The differences are 5, 8, 13, 21, 34
?= 14 The differences are 5, -2, 5, -2, 5
?=6 The differences are 4, 8, 12, 16, 20
?= 243 They are powers of 3. 31, 32, 33, 34, 35, 36
?=60 The differences are 30, 36, 42, 48, 54