Answer: 161
Step-by-step explanation:
From the question, the rule is that we start with 1, multiply the previous number by 3 then add 2 to the result to get the next number.
Based on the numbers already given such as 1, 5, 17, the 4th number will be:
= (17 × 3) + 2
= 51 + 2
= 53
The 5th number will be:
= (53 × 3) + 2
= 159 + 2
= 161
