61. Un Frate are 13 ani iar celalalt are 18 ani
62. 5+6+7=18 astea sunt cele 3 nr consecutive
63. 89+90+91=270
64. 19+21+23+25=88
65. 30+32+34+36=132
67. 248-20=228:2=114 bilete are Ana
114+20=134 bilete are Radu
Verificare: 114+134=248 bilete total
68.
