Tiêu đề WK5 - Y5 - MATH - HW - NUMBER PATTERN & SEQUENCES - AN.docx.pdf ✅

Question 1: Step 1: The sum of the numbers in the opposite triangles is 56. 39 + 17 = 56, 30 + 26 = 56, 25 + 31 = 56. Step 2: So, based on this pattern, we have- N + 35 = 56 N = 56 - 35 N = 21. Answer: C. 21 Question 2: Step 1: If we consider a sequence by skipping a triangle in the above pattern, we get- 1, 3, 6, N, 15, 21, 28. Step 2: The first difference of the above sequence is- 2, 3, N - 6, 15 - N, 6, 7. The next term of the first difference is obtained by adding 1 to the previous term. N - 6 = 3 + 1 N = 4 + 6 N = 10. Answer: B. 10 ©Scholarly 2025. All rights reserved. All digital content and materials provided are proprietary and protected under copyright law. Any reproduction or sharing of digital files, including screenshots, recordings, or downloads, is strictly prohibited without the prior written consent of Scholarly.
Question 3: 2 3 4 6 8 N Step 1: The sequence of odd terms is: 2, 4, 8. The sequence of even terms is 3, 6, N. Step 2: A term is obtained by multiplying the previous term by 2. So, N = 6 * 2 = 12. Answer: D. 12 Question 4: Step 1: We have the following 3 patterns here- 3, 4, 5, 6 2, 6, 10, 14 4, 2, 0, N. In the 3rd pattern, a term is obtained by subtracting 2 from the previous term. Step 2: So, we have- N = 0 - 2 = -2. Answer: A. -2 Question 5: ©Scholarly 2025. All rights reserved. All digital content and materials provided are proprietary and protected under copyright law. Any reproduction or sharing of digital files, including screenshots, recordings, or downloads, is strictly prohibited without the prior written consent of Scholarly.
Step 1: The number at the top is the product of the other 3 numbers divided by 10. 12 = (3 * 8 * 5)/10. 21 = (7 * 2 * 15)/10. Step 2: Let the missing number be N. So, we have- N = (5 * 6 * 5)/10 N = 150/10 N = 15. Answer: C. 15 Question 6: Step 1: The product of the numbers in the opposite quarters is equal. Step 2: So, we have- 9 * N = 6 * 6 N = 36/9 N = 4. Answer: E. 4 Question 7: Step 1: We have the following pattern- 3 * 10 - 5 = 25. 2 * 10 - 7 = 13. 4 * 10 - 9 = 31. Step 2: Based on the above pattern, the missing number is 6 * 10 - 6 = 54. Answer: D. 54 ©Scholarly 2025. All rights reserved. All digital content and materials provided are proprietary and protected under copyright law. Any reproduction or sharing of digital files, including screenshots, recordings, or downloads, is strictly prohibited without the prior written consent of Scholarly.
Question 8: Step 1: Each row, column, and diagonal sum up to the same number. So, the 2nd column and 3rd row must sum up to the same number. Step 2: 6 + 20 + 12 + 30 = 24 + 12 + N + 18 N = 68 - 54 N = 14. Answer: B. 14 Question 9: Step 1: The number in the middle triangle is the product of the numbers in the three triangles at the corners. 70 = 5 * 2 * 7 and 90 = 15 * 3 * 2. Step 2: So, we have- N = 11 * 4 * 8 = 352. Answer: D. 352 Question 10: Step 1: The sum 3 + 4 is 7 and square of the next integer 8 is 64. ©Scholarly 2025. All rights reserved. All digital content and materials provided are proprietary and protected under copyright law. Any reproduction or sharing of digital files, including screenshots, recordings, or downloads, is strictly prohibited without the prior written consent of Scholarly.