Answer: 128
Step-by-step explanation:
It is apparent that the number of pennies on each square doubles the number of pennies on the previous square.
That ca be seen in this way:
Square number of pennies
A 1
B 1 × 2 = 2
C 2 × 2 = 2² = 4
D 4 × 2 = 2³ = 8
F 2⁴ = 16
E 2⁵ = 32
G 2⁶ = 64
H 2⁷ = 128