Question

C.

24:{ 300:[ 350-( 175+25 )]× 102⁰  } D.

6²: 2× 3 + 4²× 79 - 2³ × 5

Answer 1

c: \(24:\left\{300:\left[350-\left(175+25\right)\right]\cdot102\right\}\)

\(=\dfrac{24}{300:\left(350-200\right)\cdot102}\)

\(=\dfrac{24}{300:150\cdot102}=\dfrac{24}{204}=\dfrac{2}{17}\)

d: \(6:2\cdot3+4\cdot79-2\cdot5\)

\(=9-10+316\)

=316-1

=315

Answer 2

\(C)24:\left\{300:\left[350-\left(175+25\right)\right]\cdot102^0\right\}\)

\(=24:\left[300:\left(350-200\right)\cdot1\right]\)

\(=24:\left(300:150\right)\)

\(=24:2\)

\(=12\)

\(D)6^2:2\cdot3+4^2\cdot79-2^3\cdot5\)

\(=36:2\cdot3+16\cdot79-8\cdot5\)

\(=54+1264-40\)

\(=1278\)