Answer:
This is not an arithmetic progression
Step-by-step explanation:
We have given the sequence 10,15,21,28
This is not an arithmetic sequence because arithmetic sequence is that sequence of terms in which there is common difference between all the terms
\(d=a_2-a_1\)
d=15-10=5 here, \(a_2=15,a_1=10\)
d=21-15=6 here, \(a_2=21,a_1=15\)
d=28-21=7 here, \(a_2=28,a_1=21\)
Therefore, not an arithmetic progression.
