17. Add. + =n A. 14 D. 13 B. 19 C. 2 18. Add. 24+2=n A. 4 B. 2 ܬܕ 1 C. 41 D. 41 on 19. Find the sum of 14 and 11 A. 7 B. 11 c. D. 1 12 12 12 20. Determine the difference of 4 and ? 5 10 A 6 8 B. 9 7 10 10 D. 10 21. Which illustration shows of 2. C. B. D.