Jawahar Navodaya Vidyalaya Selection Test (JNVST)

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JNVST >> Concepts >> Logical Reasoning >> Logical Sequences: Understanding and completing logical sequences
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Logical Sequences: Understanding and completing logical sequences

🚀 Logical sequences are patterns or arrangements of numbers, letters, or objects that follow a specific rule or set of rules. Understanding these sequences is crucial for solving problems in mathematics and everyday life. In the context of the JNVST, logical sequences often involve identifying the pattern and predicting the next item in the sequence. For example, if you see a sequence like 2, 4, 6, 8, you might recognize that each number is increasing by 2, so the next number would be 10. Logical sequences can be found in various forms, such as arithmetic sequences, geometric sequences, or even patterns in shapes or colors. Recognizing these patterns helps in developing critical thinking and problem-solving skills.

Examples💡

Example 1: Consider the sequence 5, 10, 15, 20. Here, each number is increasing by 5. To find the next number, add 5 to the last number: 20 + 5 = 25. So, the next number is 25.
Example 2: Look at the sequence A, C, E, G. This sequence skips one letter in the English alphabet. After G, the next letter, skipping one, is I. So, the next item in the sequence is I.
Example 3: Imagine a sequence of shapes: circle, square, circle, square. The pattern alternates between circle and square. Following this pattern, the next shape would be a circle.

Common Mistakes to Avoid⚠️

  • Mistake 1: Not identifying the correct pattern. Students might see a sequence and assume a pattern without checking all elements. Always verify the pattern with all given items.
  • Mistake 2: Skipping steps in the sequence. Sometimes students jump to conclusions without following the sequence rules. It's important to follow the pattern step-by-step.
  • Mistake 3: Confusing similar patterns. For example, mixing up arithmetic and geometric sequences. Always check if the pattern involves addition, multiplication, or another operation.
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