2) Comment obtenir le nombre 1000en utilisant le chiffre 9 neuf fois et les opérations de votre choix?

number of girls is \( 9: 7 \). Find the number of boys if the total number of students is 3200 . 19. The sides of a triangle are in the ratio of \( 2: 3: 4 \). If the perimeter is 72 cm , find its sides. 20. In a factory the ratio of number of defective bolts produced to the number of good bulbs is \( 1: 10 \). In one hour the factory produced 330 bolts. Find the number of defective bulbs produced by the

What is the absolute value of \( -12 + 4 \)?

Find the absolute value of \( 5 \).

15. Odadin tam bölonlorinin sayını tapın. \( \begin{array}{llll}\text { 1) } 120 & \text { 2) } 45 & \text { 3) } 75 & \text { 4) } 196\end{array} \) 5) 243 6) 300

If \( 3^2 \) is calculated, what is the result?