Which ratio is the odd one out? 1:8, 5:40, 7:55, 10:80, 3:24

i) 1: 8

ii )5 : 40

1: 8

iii) 7: 55

iv) 10: 80

1: 8

v) 3: 24

1 : 8

7 : 55 is odd one

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.

step-by-step explanation: