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Number Analogy - Expert Level: number reversal EXPERT

Comprehensive self assessment worksheet covering 20 expert-level number analogy problems. Worksheet 28 of 30 emphasizes number reversal. Master cubic relations, factor relationships, decimal patterns through detailed explanations. Difficulty: challenging problems and time-bound practice. Tailored for expert-level preparation.

📝 Worksheet 28 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Expert level

What you'll learn in this worksheet:
Your progress through Number Analogy
Worksheet 28 of 30 (93% complete)

Question 1

Find the missing number: 54 : 34 :: 65 : ?
The relationship is the difference between number and product of its digits. |65 - 30| = 35
product, digits

Question 2

Find the missing number: 9 : 81 :: 5 : ?
The relationship is squaring the number. So 9² = 81, and 5² = 25
square, power

Question 3

Find the missing number: 23 : 19 :: 43 : ?
The relationship is the previous prime number. Previous prime before 43 is 41
prime, advanced

Question 4

Find the missing number: 7 : 14 :: 11 : ?
The relationship is adding 7 (or double for some patterns). Here 11 + 14 = 25
addition, basic

Question 5

Find the missing number: 2 : 9 :: 5 : ?
The relationship is the next consecutive square. (5+1)² = 36
square, roots

Question 6

Find the missing number: 3 : 7 :: 9 : ?
The relationship is adding 4. So 3 + 4 = 7, and 9 + 4 = 13
addition, basic

Question 7

Find the missing number: 92 : 11 :: 72 : ?
The relationship is the sum of digits. Sum of digits of 92 = 11, sum of digits of 72 = 9
digit, sum

Question 8

Find the missing number: 124 : 8 :: 145 : ?
The relationship is the product of digits. Product of digits of 124 = 8, product of digits of 145 = 20
product, digits

Question 9

Find the missing number: 38 : 45 :: 84 : ?
The relationship is the difference between number and its reverse. |84 - 48| = 36
reverse, digits

Question 10

Find the missing number: 4 : 16 :: 6 : ?
The relationship is raising to the power of 2. So 4^2 = 16, and 6^2 = 36
square, power

Question 11

Find the missing number: 145 : 20 :: 215 : ?
The relationship is the product of digits. Product of digits of 145 = 20, product of digits of 215 = 10
product, digits

Question 12

Find the missing number: 7 : 49 :: 5 : ?
The relationship is squaring the number. So 7² = 49, and 5² = 25
multiplication, basic

Question 13

Find the missing number: 1, 5 : 6 :: 3, 3 : ?
Fibonacci pattern: each term is sum of previous two. 3 + 3 = 6
pattern, sequence

Question 14

Find the missing number: 69 : 96 :: 79 : ?
The relationship is reversing the digits. Reverse of 69 is 96, reverse of 79 is 97
reverse, digits

Question 15

Find the missing number: 83 : 11 :: 16 : ?
The relationship is the sum of digits. Sum of digits of 83 = 11, sum of digits of 16 = 7
digit, sum

Question 16

Find the missing number: 3 : 12 :: 13 : ?
The relationship is adding 9. So 3 + 9 = 12, and 13 + 9 = 22
addition, basic

Question 17

Find the missing number: 10 : 60 :: 12 : ?
The relationship is multiplying by 6. So 10 × 6 = 60, and 12 × 6 = 72
multiplication, basic

Question 18

Find the missing number: 47 : 1 :: 85 : ?
The relationship is sum of digits plus 1 (wrapping at 9). For 85: 13 + 1 = 1
digit, sum

Question 19

Find the missing number: 3, 9 : 6 :: 3, ? : ?
In AP, common difference = 6. Next term after 3 is 9
progression, sequence

Question 20

Find the missing number: 5 : 10 :: 3 : ?
The multiplier increases by 1: ×2 then ×3. So 3 × 3 = 9
multiplication, basic
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