1 4 7 10 x 287 find the July 8, 2019 16 32 64 128 1 4 7 10 x 287 find the value of x If 1 4 7 10 ⋯ x 287 find the value of Find the missing number in the sequence 10 7 4 1 find the next number 1 + 2 + 3 + 4 = 10