Question

If we call 100 people in a group how many people will have least birthday in same month

Answer 1

Given :  100 people in a group

To Find :   how many people will have at least birthday in same month

Solution:

there are 12 month

to have minimum people atleast having birthday in same month divide them equally

Hence 12 * 8 = 96    

now distribute  remaining 4  , 1 in any 4 months

Hence atleast 9 people will have  birthday in same month

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Answer 2

$\huge\rm\underline\pink{Answer}$

Given :

100 peoples in a group

To find :

How many people will have atleast birthday in same month.

Solution :

To have minimum people atleast having birthday in same month divided them equally.

So,

12 × 8 = 96

Now,

distribut remaining 4, 1 in any 4 months.

$\therefore$Atleast 9 people will have birthday in same month.