3 giờ 15 phút > 3,15 giờ

Các phần dưới tương tự nhé

ai k mình mình k lại

20

\(2^3.15-\left[149-\left(12-5\right)^2\right]=8.15-\left(149-49\right)=120-100=20\)

A = \(\frac{3}{4}\cdot\frac{8}{9}\cdot\frac{15}{16}\cdot\cdot\cdot\cdot\frac{9999}{10000}=\frac{1\cdot3}{2.2}\cdot\frac{2\cdot4}{3\cdot3}\cdot\frac{3.5}{4.4}\cdot\cdot\cdot\cdot\frac{99\cdot101}{100\cdot100}=\frac{1}{2}\cdot\frac{101}{100}=\frac{101}{200}\)

B = ( 1- 1/4 )( 1-1/9) ...( 1-1/10000 ) = 3/4 . 8/9 .....9999/100000 ( tương tự A )

a=5051/100 co ma

xin loi ban lam dung roi minh nham

\(3^3.1^8-3^3.15\)

\(=3^3\left(1-15\right)\)

\(=27.\left(-14\right)\)

\(=-378\)

Trl :

3³ .1⁸ - 3³.15

= 27.1 - 27.15

= 27( 1 - 15 )

= 27.( -14 )

= - 378

Lm vội :)

Sai bỏ qa

   3³ .18 - 3³.15

= 27.1 - 27.15

= 27( 1 - 15 )

= 27.( -14 )

= - 378

\(\dfrac{-2}{3}.\dfrac{15}{-4}-\dfrac{-1}{5}:\dfrac{1}{-5}\)

\(\dfrac{5}{2}-1=\dfrac{3}{2}\)

5/2 - 1

= 3/2

3/2