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Number Analogy - Advanced Level: LCM-GCD relationships ADVANCED

Quick competitive exam prep session: 20 advanced-level number analogy questions. Worksheet 27 of 30 - Focus: LCM-GCD relationships. Practice number squares, cubic relations, factor relationships with instant feedback. Great for advanced students needing complex scenarios and multi-step problems practice.

📝 Worksheet 27 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Advanced level

What you'll learn in this worksheet:
Your progress through Number Analogy
Worksheet 27 of 30 (90% complete)

Question 1

Find the missing number: 4, 6 : 2 :: 10, ? : ?
In AP, common difference = 2. Next term after 10 is 12
progression, sequence

Question 2

Find the missing number: 97 : 79 :: 53 : ?
The relationship is reversing the digits. Reverse of 97 is 79, reverse of 53 is 35
reverse, digits

Question 3

Find the missing number: 2 : 4 :: 3 : ?
The relationship is squaring the number. So 2² = 4, and 3² = 9
multiplication, basic

Question 4

Find the missing number: 5 : 7 :: 13 : ?
The relationship is the next prime number. Next prime after 13 is 17
prime, advanced

Question 5

Find the missing number: 53 : 8 :: 78 : ?
The relationship is the sum of digits. Sum of digits of 53 = 8, sum of digits of 78 = 15
digit, sum

Question 6

Find the missing number: 4 : 64 :: 4 : ?
The relationship is cubing the number. So 4³ = 64, and 4³ = 64
square, power

Question 7

Find the missing number: 16 : 4 :: 28 : ?
The relationship is dividing by 4. So 16 ÷ 4 = 4, and 28 ÷ 4 = 7
division, basic

Question 8

Find the missing number: 27 : 9 :: 27 : ?
The relationship is dividing by 3. So 27 ÷ 3 = 9, and 27 ÷ 3 = 9
division, basic

Question 9

Find the missing number: 4 : 17 :: 3 : ?
The relationship is square then add 1. 3² + 1 = 10
square, roots

Question 10

Find the missing number: 6 : 8 (n=2) :: 5 : ?
The nth term formula: a + (n-1)d. For 5, term 2 = 7
progression, sequence

Question 11

Find the missing number: 4 : 24 :: 4 : ?
The relationship is factorial. 4! = 24, 4! = 24
factorial, advanced

Question 12

Find the missing number: 4 : 16 :: 6 : ?
The relationship is squaring the number. So 4² = 16, and 6² = 36
multiplication, basic

Question 13

Find the missing number: 7 : 11 :: 31 : ?
The relationship is the next prime number. Next prime after 31 is 37
prime, advanced

Question 14

Find the missing number: 2, 4 : 6 :: 2, 3 : ?
Fibonacci pattern: each term is sum of previous two. 2 + 3 = 5
pattern, sequence

Question 15

Find the missing number: 6 : 120 :: 5 : ?
The relationship is partial factorial (first 3 terms). For 5: 5 × 4 × ... = 60
factorial, advanced

Question 16

Find the missing number: 95 : 1 :: 58 : ?
The relationship is sum of digits plus 1 (wrapping at 9). For 58: 13 + 1 = 1
digit, sum

Question 17

Find the missing number: 30 : 20 :: 37 : ?
The subtractor increases: -10 then -13. So 37 - 13 = 24
subtraction, basic

Question 18

Find the missing number: 5 : 25 :: 3 : ?
The relationship is raising to the power of 2. So 5^2 = 25, and 3^2 = 9
square, power

Question 19

Find the missing number: 54 : 9 :: 81 : ?
The relationship is the digital root (repeated sum until single digit). Digital root of 54 = 9, of 81 = 9
digit, sum

Question 20

Find the missing number: 10 : 100 :: 7 : ?
The relationship is squaring the number. So 10² = 100, and 7² = 49
square, power
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