Answer:
a if it in that order, b if it in the other order and c and d does not make sense
Step-by-step explanation:
A sequence of

nucleotides would have

possibilities. To exclude repetitions, we count the number of combinations:
Answer:
273/1000
Step-by-step explanation:
Answer:
37.5
Step-by-step explanation:
split in the middle, 5×5=25/2=12.5
12.5= triangle
5×5=25
25=square
12.5+25=37.5