Answer:
Step-by-step explanation:
3
256, 1024, 4096.
The rule is x*4.
--> 1*4 = 4.
--> 4*4 = 16.
--> 16*4 = 64.
--> 64*4 = 256.
--> 256*4 = 1024.
--> 1024*4 = 4096.
Here you go!! these are all the ones i know, sorry but i hope you get a A+
14-2a
Since 15 and 21 are not included: we will have
=15-2a-1
=14-2a
