Răspuns:
Explicație pas cu pas:
a) abc = 100a + 10b + c
b) ab = 10a + b
c) abcd = 1000a + 100b + 10c + d
d) aab = 100a + 10a + b = 110a + b
e) aaaa = 1000a + 100a + 10a + a = 1111a
f) a0b = 100a + 0 + b = 100a + b
g) ab0cd = 10000a + 1000b + 0 + 10c + d = 10000a + 1000b + 10c + d
h) aab0c0 = 100000a + 10000a + 1000b + 0 + 10c + 0 = 110000a + 1000b + 10c
