12 is the answer and everyone hit that season if u think u will see that no offense
40
8x5=40
10x4=40
Hope this helps
No it far 10 is way out there

Common difference of an Arithmetic progression can be found out by subtracting the preceding term from that given term.
i.e
therefore, the common difference of the above Arithmetic progression is -4 .
Answer:
In a triangle, sides opposite of congruent angles are congruent.