Select all of the following aspects of Erik Erikson's initiative versus guilt stage of preschool development. Children are in a stage of learning the difference between trust and mistrust Children initiate ideas for play and other activities Developmental focus is on gaining a greater sense of self-control If the ideas and plans of preschoolers fail or are criticized, instead of building confidence children may develop a sense of guilt or self-doubt Through planning and carrying out ideas, children build confidence in their abilities

Solve system of linear equations \( \mathrm{Ax}=\mathrm{b} \), where \( A=\left(\begin{array}{ll}1 & 2 \\ 2 & 1\end{array}\right), b=\binom{4}{3} \)

12. Some apples are divided among four people Karan, Kiran, Kumar and Khanna. The ratio of the number of apples given to Kiran to the total number of apples given to Karan and Khanna is \( 1: 2 \). The ratio of the number of apples given to Kumar to that of the remaining apples is \( 2: 5 \). Khanna gets 2 apples more than Kiran. Karan gets half the number of apples that Kumar gets. What is the total number of apples distributed? \( \begin{array}{ll}\text { (A) } 21 & \text { (B) } 18 \\ \text { (C) } 19 & \text { (D) } 24\end{array} \)

2. Предложите единицы скорости, не указанные в 3. Выразите скорости \( 72 \frac{\mathrm{kM}}{\mathrm{q}} \) и \( 18 \frac{\mathrm{kм}}{\mathrm{q}} \) в единицах СИ

1. แท่งตะกั่วทรงสี่เหลี่ยมมุมฉาก มีพื้นที่ฐาน 20 ตาราง เซนติเมตร หนา 1.5 เซนติเมตร แท่งตะกั่วนี้มีปริมาตรเท่าใด วิธิคิด ตอบ

- بـ أن: \( B=\frac{221}{11} \).