Draw the three circle name as apple grapes orange
they have to be intersect each other
only apple given 20
only oranges given 30 only grapes given 40
all three 10 apple & orange 12
apple&grape 14 ;orange&grapes 10
answers:
only apple 20 -10 (bcoz all)-(12 -10 )(apple&orange)(2 )-(14 -10 )(apple&grapes)(4 )
20 -(10+2+4) 4 only apple:
like this all
for none
add all only apply orange grapes 48 +16 (from apple&orange(2)apple&grape(4)grape&orange(0)all(10))
total 64
100-64 36 note ate the apple