Question

1, 2, 6, 7, 21, 22, 66, ?, 201

a) 69
b) 68
c) 67
d) 70

givee the solution with explanation ​

Answer 1

$\red{67 \: is \: your \: answer}$

Answer 2

Answer:

67

Step-by-step explanation:

hope this helps you

the pattern is +1,×3,+1,×3