Question

So sánh A và B

A= 10^15+1 / 10^16+1

B= 10^16+1 / 10^17+1

 

Answer 1

Ta có:

10A=10¹⁶+10/10¹⁶+1=1+​​(9/10¹⁶+1)

10B=10¹⁷+10/10¹⁷+1=1+(9/10¹⁷+1)

Vì 9/10¹⁶+1 > 9/10¹⁷+1 nên 10A>10B,do đó A>B

Answer 2

Ta có:

10A=10^16+10/10^16+1=1+﴾9/10^16+1﴿

10B=10^17+10/10^17+1=1+﴾9/10^17+1﴿

Vì 9/10^16+1 > 9/10^17+1 nên 10A>10B,do đó A>B 

Answer 3

Ta có:

10A= 10^16+10  / 10^16+1

       =1+ 9 / 10^16 + 1

10B= 10^17+10 / 10^17+1

       =1+ 9 / 10^17 + 1

Vì 9 / 10^16 + 1 > 9 / 10^17 + 1 nên 10A>10B

Do đó A > B

Answer 4

Ta có:

10A=10^16+10/10^16+1=1+﴾9/10^16+1﴿

10B=10^17+10/10^17+1=1+﴾9/10^17+1﴿

Vì 9/10^16+1 > 9/10^17+1 nên 10A>10B,do đó A>B

Answer 5

Ta có:

10A=1016+10/1016+1=1+​​(9/1016+1)

10B=1017+10/1017+1=1+(9/1017+1)

Vì 9/1016+1 > 9/1017+1 nên 10A>10B,do đó A>B