Playing With Numbers
EXERCISE 3.2
CBSE Class 6 Maths
Ulam Spiral (Arrange Numbers in Spiral and make Prime Number) credits: wikipedia user:onmywaybackhome |
Ulam Spiral (You see prime numbers appear at diagonals of rectangles) credit: wikipedia |
(a) Odd numbers?
(b) Even numbers?
Answer:
(a) The sum of any two odd numbers is an even number.
Example:
1 + 3 = 4,
7 + 5 = 12
(b) The sum of any two even numbers is also an even number.
Example: 2 + 4 = 6,
8 + 18 = 26