Let’s analyze the given pattern carefully:
1. 9999 = 4
2. 8888 = 8
3. 1816 = 3
4. 1212 = 0
5. 1919 = ?
Step 1: Identifying a Pattern
Observing the numbers and their corresponding results, we notice that the outputs might be related to the number of closed loops (enclosed areas) in each digit.
Step 2: Counting the Loops in Each Digit
• 9 has 1 enclosed loop.
• 8 has 2 enclosed loops.
• 6 has 1 enclosed loop.
• 1, 2, 3, 5, and 7 have 0 enclosed loops.
• 0 has 1 enclosed loop.
Step 3: Verifying the Pattern
• 9999 → Each 9 has 1 loop, so 1 + 1 + 1 + 1 = 4 ✅
• 8888 → Each 8 has 2 loops, so 2 + 2 + 2 + 2 = 8 ✅
• 1816 →
• 1 has 0 loops
• 8 has 2 loops
• 1 has 0 loops
• 6 has 1 loop
• Total: 0 + 2 + 0 + 1 = 3 ✅
• 1212 →
• 1 has 0 loops
• 2 has 0 loops
• 1 has 0 loops
• 2 has 0 loops
• Total: 0 + 0 + 0 + 0 = 0 ✅
Step 4: Solving for 1919
• 1 → 0 loops
• 9 → 1 loop
• 1 → 0 loops
• 9 → 1 loop
• Total: 0 + 1 + 0 + 1 = 2
Final Answer: 2 ✅