Question

Scrie toate numerele de doua cifre care au rezultatul adunarii cifrei unitatilor cu cea a zecilor:6,7,8, 9,10

Answer 1

6---15.24.33.42.51.60
7--16.25.34.43.52.61.70
8--17.26.35.44.53.62.71.80
9--18.27.36.45.54.63.72.81.90
10-19.28.37.46.55.64.73.82.91

Answer 2

6-- 15 24 42 33 60 51
7-- 16 25 43 34 61 52 70
8-- 17 26 44 35 62 53 80
9-- 18 27 45 36 63 54 90
10--19 28 46 37 64 55 91