Question

Cho:A=a542 +b37 +c4 + d                               ;                         B=ab5d +5c7

Hãy so sánh A và B (a,b,c,d là các chữ số)

Answer 1

A=a000+b00+c0+d+542+37+4=abcd+583

B=ab0d+c0+50+507=abcd+557

ta có : abcd+583>abcd+557

=> A>B

Answer 2

A=a000+b00+c0+d+542+37+4=abcd+583

B=ab0d+c0+50+507+abcd+557

ta co :abcd+583>abcd+557

nen A>B

Answer 3

A=a000+542+b00+37+c0+4+d=abcd+583

B=ab0d+50+0c0+507=abcd+557

Vì:A=abcd+583>B=abcd+557

=> A>B

Answer 4

A=a000+b00+co+d+542+37+4=abcd+583

B=ab0d+c0+50+507=abcd+557

ta co abcd+583>abcd+557

=>A>B

Answer 5

A=a000+b00+c0+d+542+37+4=abcd+583

B=ab0d+c0+50+507=abcd+557

ta có : abcd+583>abcd+557

=> A>B