12 √ 21 4 √ 7 July 8, 2019 16 32 64 128 12 21 4 7 12 7 x 21 4 4 7 12 21 sequence 4 7 12 21 next number 21 12 4 3x (- 7 Is 12 21 equivalent to 4 7 Is 12 21 equal to 4 7 52 12 21 n 0 7 4 7 e 4 7 12 21 true or false
