Question

gasiti toate numele naturale de trei cifre in scrierea carora se intalnesc
a)1 si 2;
b)1 si 0:
c)4,5 si 0:
d)4,5 si 1.

Answer 1

a) 120,121,122,123,124,125,126,127,128,129,102,112,122,132,142,152,162,172,182,192,201,211,221,231,241,251,261,271,281,291,210,211,212,213,214,215,216,217,218,219

b)100,101,102,102,103,104,105,106,107,108,109,110,120,130,140,150,160,170,180,190

c)450,405,540,504

d)451,415,541,514,145,154

Answer 2

a )
102, 120, 201, 210, 312, 321, 421, 412, 521, 512, 621, 612, 721, 712, 821, 812 , 921, 912
b )
100, 101, 103, 104 , 105, 106, 107, 108, 109, 110, 210, 201, 310, 301, 410, 401, 510, 501, 610, 601, 710, 701, 810, 801, 910, 901
c )
450, 405, 504, 540
d )
451, 415, 541, 514, 145, 154