Number/Letter Series MCQs for Rajasthan SI
Practice 20 free number/letter series multiple choice questions for Rajasthan SI exam. Instant answers, explanations in Hindi and English, and topic-wise targeted practice.
Master Number/Letter Series under Mental Ability for Rajasthan SI with our curated MCQ set. Every question is sourced from real Rajasthan exam patterns and updated regularly. Switch between Hindi and English anytime. Use this daily to strengthen weak areas before the exam.
Rajasthan SI — Mental Ability — Number/Letter Series
20 Questions • Instant results & explanations • Hindi & English
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Question 1 of 20
Match List-I (Sequence Type) with List-II (Underlying Logic) and choose the correct code: List-I a. 1, 4, 9, 16 b. 2, 3, 5, 7 c. 10, 8, 6, 4 List-II 1. Normal Decrease (Subtraction) 2. Squares of Natural Numbers 3. Prime Numbers
Question 2 of 20
If a student observes a number puzzle where values first increase and then decrease by large margins consecutively, what should they investigate first?
Question 3 of 20
Assertion (A): Constant practice is considered the most effective method for mastering number puzzles. Reason (R): The mathematical operations and rules applied vary significantly from one question to another.
Question 4 of 20
According to the principles of number puzzles, what is the best method to gain proficiency in solving these questions?
Question 5 of 20
Match List-I (Observation in Series) with List-II (Likely Mathematical Operation) and select the correct answer: List-I a. Increase then decrease with small difference b. Rapid increase then rapid decrease c. Normal rate of increase List-II 1. Alternate Multiplication and Division 2. Alternate Addition and Subtraction 3. Addition
Question 6 of 20
A student identifies that a series uses multiplication because the numbers grow rapidly. However, the exact multiples don't match. What additional step is advised by the standard puzzle rules?
Question 7 of 20
If a mathematical puzzle involves numbers placed within a specific layout, what is the mandatory prerequisite to finding the missing number?
Question 8 of 20
Consider the following statements: I. Rapid increase in numbers indicates multiplication, square, or a positive power. II. Rapid decrease in numbers exclusively indicates subtraction without division. Which of the statements given above is/are incorrect?
Question 9 of 20
Match List-I (Visual Change in Series) with List-II (Underlying Mathematical Operation) and select the correct answer: List-I a. Rapid Increase b. Normal Increase c. Small alternate fluctuations List-II 1. Addition 2. Alternate Addition & Subtraction 3. Multiplication or Positive Power
Question 10 of 20
Identify the correct statement concerning the operations within a number series puzzle.
Question 11 of 20
Which specific combinations of alternate operations are classified strictly based on the magnitude of change (rapid vs. small) in the sequence?
Question 12 of 20
Assertion (A): When a numerical series shows alternating rapid increases and rapid decreases, it indicates a combination of addition and subtraction. Reason (R): Rapid changes in series values are primarily driven by multiplication and division operations.
Question 13 of 20
When a series shows a rapid increase followed by a rapid decrease in an alternating manner, which mathematical operations are being performed one by one?
Question 14 of 20
Match List-I (Example Series) with List-II (Underlying Logic) and choose the correct code: List-I a. 1, 4, 9, 16, 25, 36 b. 2, 3, 5, 7, 11, 13 List-II 1. Prime numbers starting from 2 2. Squares of natural numbers
Question 15 of 20
Which of the following mathematical operations is NOT explicitly mentioned as a common base for number series in the standard rules of number puzzles?
Question 16 of 20
What is the very first step required to find a missing term in a number puzzle or diagram?
Question 17 of 20
When the values in a number series are decreasing at a normal rate, the underlying operation is generally:
Question 18 of 20
Consider the following statements: I. A number series based entirely on squares will show a rapid increase. II. A number series based on simple addition will show a rapid, exponential increase. Which of the statements given above is/are correct?
Question 19 of 20
Consider the following statements regarding number series: I. A series exhibiting a normal rate of decrease is typically based on subtraction. II. A series exhibiting a rapid rate of decrease is typically based on division. Which of the statements given above is/are correct?
Question 20 of 20