Ans this, it's urgent.
How to recognise universal set and union in a particular question?
For an instance..
In my above attachment, in example 14 they have took the 10,000 families in town as universal set.
And in example 4 they have took the group of 50 people as union.
And I am confused abt how to recognise union & universal
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universal means all the famikies will come i.e whole universe and union means only 2 particular group mixed
CHAHIT1:
union means only 2 mix groups for eg: 1,2,3,4,5,6,7,8,9 ,10,11,12
and another
ok
10x
ina a circle suppose 2 circles in 1st circle 1,2,4,6,5 are there and in 2nd circle 9,10,11 are there and no. 8 is in both the circles and the this is called a union
any example for universal?
only no. in circles r denoted as unoin and all the no.s i.e 1 to 12 are called as universal
ohkk
universal means inclusion of all the no.s present in the box
thanks got it now.
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