4 digit palindromes must be of form abba, so being required that you use both numbers, you only have two: 1221 and 2112
Answer:
4. Circumference = diameter × π
8× 3. 14= 25. 12 ~25. 1
5. 13×3. 14= 40. 82 ~40. 8
6. Diameter= radius ×2
3. 5×2=7
Diameter = 7
7× 3. 14= 21. 98 ~22
D because there’s a pattern. Pattern for x is that it’s adding by one. Pattern for y is that it’s adding by 15
