GRE QUANT PERMUTATIONS AND COMBINATIONS, CIRCLES---
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This document contains 6 practice questions for the GRE quant section covering permutations and combinations, algebra, number theory, circles, similarity, and triangles. Question 1 asks how many combinations of 3 candidates can be chosen from a remaining pool of 8 candidates. Question 2 represents an inequality on a number line. Question 3 finds the number of positive integers less than 81 that are not perfect squares. Question 4 finds the arc length intercepted by a 210 degree inscribed angle on a circle with radius 12. Question 5 finds the length of the longer side of a triangle if the shorter sides are 3 and 4 cm and the longer side is a diameter. Question 6 uses similarity to find side XZ if triangles PQR and XYZ are similar with given side
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For more instructional resources, CLICK me here! 👇👇👇
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GARIS & SUDUT (Review & Link PH 3) - P7
Pertemuan 7
By Bu Arnis Irianti
GARIS & SUDUT (Review)
Link PH 3. GARIS & SUDUT (shared: Google Classroom)
MATEMATIKA
Kelas 7
#pjj
TA 2020/2021
#sn
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Digital text book
This document provides information about arithmetic sequences and circles. It defines arithmetic sequences as sequences where each term is found by adding a common difference to the previous term. It gives examples and discusses finding the general term and sum of an arithmetic sequence. The document also defines circles terms like diameter, chord, arc, segment, and discusses properties of angles related to circles and cyclic quadrilaterals. It provides examples applying the circle concepts.
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2) Two of the four statements about sequences and patterns are true - that it follows the Fibonacci sequence and is an arithmetic sequence with a common difference of 4.
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This document provides examples for estimating square roots and cube roots of numbers that are not perfect squares or cubes. It shows how to estimate the value by finding the largest perfect square or cube below the number and the smallest perfect square or cube above it. The square or cube roots of these numbers are then used to determine an integer estimate between them. Several step-by-step examples are provided to demonstrate this process. Common Core State Standards addressed in the lesson are also listed.
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This document discusses calculating the areas and perimeters of various shapes. It provides examples of finding the perimeter by counting sides and finding the area by counting squares for both regular and irregular shapes. It also introduces calculating the area of rectangles using the formula of length x width and calculating the total area of composite shapes by finding the individual areas and summing them.
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- 2. Question 1 A manager has the choose 6 persons. From the 11 candidates available, he has already chosen 3. How many different combinations of the remaining candidates does the manager choose from Since the manager has already chosen 3 candidates, he now has to choose 3 out of 8. This can be done in 8𝐶3 =56 ways
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- 5. Question 4 What arclength is intercepted by an inscribed angle of 210 on a circle with radius = 12 B 21 A B 42 Required to find arclength AB Angle at the centre = 420 𝑎𝑟𝑐𝑙𝑒𝑛𝑔𝑡ℎ 𝐴𝐵 = 𝑟𝜃 = 12 × 42 × 𝜋 180 =17.6
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- 7. Triangles PQR and XYZ are similar. If PQ= 6cm, PR = 4 cm, XY = 9 cm, find XZ QUESTION 6 We draw a rough sketch R p Q R X Y Z 6 4 9 x
- 8. We use the following property Corresponding sides of similar triangles are proportional 𝑃𝑄 𝑋𝑌 = 𝑃𝑅 𝑋𝑍 6 9 = 4 𝑥 x= 6 cm ******************************