2. Natural number
Whole number
Even number
Odd number
Prime number
3. • Numbers that start from
1,2,3,4,5…..so one are called
natural numbers . “zero” is not a
natural number. So 1, is the
smallest natural number.
4. •All natural numbers and
zero together
0,1,2,3,4,5…….so on are
called whole numbers.
Zero is the smallest whole
number
5. • A counting number which is
exactly divisible by 2 is
called an even
• For example:-
0,2,4,6,8,10,12…..etc.
Every unit place of an even
number will be 0,2,,6,8.
.
6. • A counting number which is
not divisible by 2 is called an
odd number
• For example:-
1,3,5,7,9,11……etc.
• Every unit place of an odd
number will be 1,3,5,7,9.
7. • A counting number is called a
prime number when it is
divisible only by “1” and itself
• Numbers are:-
2,3,5,7,11,13,17,19,23,29,37
,41,43,47,53,59,61,67,71,73,79
,83,89,97.