ex 6
a)9998
b)9999
c)9696
ex 7
a)9990
b)9995
c)9999
ex 8
a)Adevarat
b)Fals
c)Fals
d)Fals
e)Fals
ex.9
a)10750,10752,10754,10756,10758
b)29310,29312,29314,29316,29318
ex 10
a)24670,24675
b)90110,90115.
c)Mulțime infinita
ex 11
a)372,375,378
b)462,465,468
c)750,753,756,759
d)6051,6351,6651,6951
e)7161,7164,7167
f)8315,8345,8375
ex 12
a)532,536
b)460,464,468
c)752,756
d)1216,1236,1256,1296
e)3004,3044,3084
f)7920,7960
ex 13
a)261
b)522
c)uri
d)1206
e)3024
f)7920
