Question

Find the missing number in the following series.
4, 6, 10, 18, 34, 66, ?, 258​

Answer 1

Answer:

130

Step-by-step explanation:

4×2-2=6

6×2-2=10

10×2-2=18

18×2-2=34

34×2-2=66

66×2-2=130

130×2-2=258

Answer 2

Answer:

130

Step-by-step explanation:

4+2=6

6+4=10

10+8=18

18+16=34

34+32=66

66+64=130

130+128=258