A hypothesis or educated guess
Answer:
Calvert Richard Jones
Explanation:
Just five years later, in 1846, the first known act of photographic retouching was performed by a Welsh colleague of Talbot's named Calvert Richard Jones, or perhaps by one of Jones's associates
Answer:
def is_dual( array):
if len(array) % 2 == 0:
count = 0
for i in range(0, len(array)//2, 2):
if array[i] + array[i+1] == array[0] + array[1]:
count += 1
if count == len(array)//2:
return True
else:
return False
Explanation:
The python program defines a function called is_dual that accepts an array parameter and check if the array is dual. If it meets the condition, the function returns true but returns false when the array is not dual.
