1+2+3+4+5+6+7+8+9+10=55

11+12+13+14+15+16+17+18+19+20=155

1+2+3+4+5+6+7+8+9+10+11+12+13+14 +15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30-50-53=362

1+2+3+4+5+6+7+8+9+10=55

11+12+13+14+15+16+17+18+19+20=155

1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30-50-53=362

\(1+2+3+4+5+6+7+8+9+10=55\)

\(11+12+13+14+15+16+17+18+19+20=155\)

=55

=155

=438

Tích cho mình đi

Bài 1:

16 = 2⁴

64 = 2⁶

1 = 2⁰

1/32 = 2^-5

1/8 = 2^-3

0,5 = 1/2 = 2^-1

0,25 = 1/4 = 2^-2

Bài 2:

a) ta có: 16²⁴ = (4²)²⁴ = 4⁴⁸

27¹⁶ = (3³)¹⁶ = 3⁴⁸ < 4⁴⁸

=> 16²⁴>27¹⁶

b) ta có: 10²⁰ = (10²)¹⁰ = 100¹⁰ > 90¹⁰

ko phải toán lớp 6

5) 24*(15+49)+12*(50+42)

=24*64+12*92

=24*64+12*2*46

=24*64+24*46

=24*(64+46)

=24*110

=2640

7) 53*(  51+4)+53*(49+96)+53

=53*55+53*145+53

=53*(55+145)+53

=53*200+53

10600+53

=10653

\(\frac{2^{19}.27^3+15.4^9.9^4}{6^9.2^{10}+12^{10}}=\frac{2^{19}.\left(3^3\right)^3+3.5.\left(2^2\right)^9.\left(3^2\right)^4}{\left(2.3\right)^9.2^{10}+\left(2^2.3\right)^{10}}\)

\(=\frac{2^{19}.3^9+3.5.2^{18}.3^8}{2^9.3^9.2^{10}+2^{20}.3^{10}}\)

\(=\frac{2^{18}.3^8.\left(2.3+3.5\right)}{2^{18}.3^9.\left(2+2^2.3\right)}\)

\(=\frac{6+15}{3.\left(2+12\right)}\)

\(=\frac{21}{3.14}=\frac{21}{42}=\frac{1}{2}\)

\(A=\frac{2^{19}\cdot3^9+3\cdot5\cdot2^{18}\cdot3^8}{2^9\cdot3^9\cdot2^{10}+4^{10}\cdot3^{10}}=\frac{2^{18}\cdot3^9\times\left(2+5\right)}{2^{19}\cdot3^9\times\left(1+6\right)}=\frac{1}{2}\)

ai trả lời đầu tiên mình tick choa :)

C

C nha Gia Long

TL:

16 + 20 + 24 + ... 64 + 68

16 + 20 + 24 + ... 64 + 68 = 588

-HT-

588 

là 16 + 20 + 24 + 28 + 32 + 36 + 40 + 44 + 48 + 52 + 56 + 60 + 64 + 68 =588

16+20+24=60 >64 + 68 =132

hhhjhjh

ket qua bang 18