KSEEB Solutions for Class 8 Maths Chapter 1 Playing with Numbers Ex 1.5

Students can Download Maths Chapter 1 Playing with Numbers Ex 1.5 Questions and Answers, Notes Pdf, KSEEB Solutions for Class 8 Maths helps you to revise the complete Karnataka State Board Syllabus and score more marks in your examinations.

Karnataka Board Class 8 Maths Chapter 1 Playing with Numbers Ex 1.5

Question 1.
Using the numbers from 5 to 13 construct a 3 × 3 magic square. What is the magic sum here? What relation is there between the magic sum and the number in the central cell?
Answer:
Magic sum is 27
Central number is 9
We have ⇒ 27 = 3 × 9
Magic sum is 3 times the central number.

12 5 10
7 9 11
8 13 6

Question 2.
Using the numbers from 9 to 17 construct a 3 × 3 magic square. What is the Magic sum here? What relation is there between the magic sum and the number in the central cell?

16 9 14
11 13 15
12 17 10

Answer:
Magic sum is 39
Central Number is 13
we have ⇒ 39 = 3 × 13
The magic sum is 3 times the central number

Question 3.
Starting with the middle cell in the . bottom row of the square and “using numbers from 1 to 9 construct a 3 × 3 magic square.
Answer:

2 9 4
7 5 3
6 1 8

Question 4.
Construct a 3 × 3 magic square using all odd numbers from 1 to 17.
Answer:

15 1 11
5 9 13
7 17 3

Question 5.
Construct a 5 × 5 magic square using all even numbers from 1 to 50.
Answer:

34 48 2 16 30
46 10 14 28 32
8 12 26 40 44
20 24 38 42 6
22 36 50 4 18

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