True
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If the four colors are well -balanced then nothing could be best scheme other than the "Square" as it is it's characteristic
In short, Your Answer would be Option C
Hope this helps!
Answer:
64
Explanation:
We have given the 32 bit architecture
We know that 1 byte =8 bit
So memory of given architecture 32 bit 
Total memory = 256 bytes
So total number of instruction that fit into 256 bytes 
So total 64 instruction can be fit in 256 byte memory.
Answer:
create trigger F1_Del
after delete on Friend
for each row
when exists (select * from Friend
where ID1 = Old.ID2 and ID2 = Old.ID1)
begin
delete from Friend
where (ID1 = Old.ID2 and ID2 = Old.ID1);
end
create trigger F1_Insert
after insert on Friend
for each row
when not exists (select * from Friend
where ID1 = New.ID2 and ID2 = New.ID1)
begin
insert into Friend values (New.ID2, New.ID1);
end
