The correct answer is 30
5×2×3=30
Red, Size 1, Interior 1
Red, Size 2, Interior 1
Red, Size 3, Interior 1
Red, Size 1, Interior 2
Red, Size 2, Interior 2
Red, Size 3, Interior 2
Orange, Size 1, Interior 1
Orange, Size 2, Interior 1
Orange, Size 3, Interior 1
Orange, Size 1, Interior 2
Orange, Size 2, Interior 2
Orange, Size 3, Interior 2
Yellow, Size 1, Interior 1
Yellow, Size 2, Interior 1
Yellow, Size 3, Interior 1
Yellow, Size 1, Interior 2
Yellow, Size 2, Interior 2
Yellow, Size 3, Interior 2
Green, Size 1, Interior 1
Green, Size 2, Interior 1
Green, Size 3, Interior 1
Green, Size 1, Interior 2
Green, Size 2, Interior 2
Green, Size 3, Interior 2
Blue, Size 1, Interior 1
Blue, Size 2, Interior 1
Blue, Size 3, Interior 1
Blue, Size 1, Interior 2
Blue, Size 2, Interior 2
Blue, Size 3, Interior 2