Question

Determinati nr. naturale n care indeplinesc conditiile: a) n are 2 cifre si n ≥ 97; b) n are 3 cifre si n<105; c)n are 3 cifre identice si n ≤ 334; d) n este numar par si 125 <n ≤140; e) n este nr. impar si 1256 ≤ n ≤1281; f) n ≤ 21 si n ≥ 21

Answer 1

a)97,98,99
b)104,103,102,101,100
c)333,222,111
d)126,128,130,132,134,136,138,140
e)1257,1259,1261,1263,1265,1267,1269,1271,1273,1275,1277,1279,
1281
f)21,20,.....0
21......+ infinit