Answer:
The answer for first one is,

sorry I don't know the answer for second one.
To land on 0 the number would need to end with a .5 or .0 since that is the only way .0 can occur with counting down by.5( half)
Answer:
1, 5, 17, 53, 161
Step-by-step explanation:
Given:
First five terms of the sequence:





The sum of 31/4+42/4= 18.25
<u>Step-by-step explanation</u>:
- The denominators are same.
- Then add the numerators and keep the denominators same.
The sum of (31/4) + (42/4) = (31+42)/4
⇒ 73/4
⇒ 18.25
Answer: Okay, what's the question?
Step-by-step explanation: