The answer is

Pattern Analysis:

1. Top Triangle:
   • A single triangle → Result: 1
   • ✅ There is only 1 visible triangle.
2. Middle Figure:
   • 1 big triangle made of 4 smaller triangles.
   • Breakdown:
     • 3 small triangles
     • 1 large triangle in the center (formed by combining 3)
     • 1 large outer triangle
     • Total = 3 (small) + 1 (center) + 1 (big) = 5 triangles
   • ✅ Answer is 5
3. Bottom Figure:
   • A large triangle made of 9 smaller triangles
   • Let’s count all possible triangles:
     • 9 small triangles (clearly visible)
     • 3 medium triangles (each made of 3 small triangles in a row)
     • 1 large triangle (the outermost big triangle)
     • 3 additional triangles formed in the middle sections
     • Total: 13 triangles