Answer:
👉 2
Explanation:
This riddle is all about recognizing patterns in powers of 2.
Let’s look at the last digits of the first few powers of 2:
- 2¹ = 2
- 2² = 4
- 2³ = 8
- 2⁴ = 16 → last digit is 6
- Then it repeats: 2, 4, 8, 6…
So, the last digits repeat every 4 powers:
[2, 4, 8, 6]
Now, divide 57 by 4:
- 57 ÷ 4 = 14 remainder 1
That means 2⁵⁷ has the same last digit as 2¹, which is:
👉 2
