n(A cup B cup C) = 100, n(A) = 4x, n(B) ...

` n(A cup B cup C)` = 100, n(A) = 4x, n(B) = 6x, n(C) = 5x, `n(A cap B)` = 20, `n(B cap C)` = 15, `n (A cap C)` = 25 மற்றும் `n(A cap B cap C)` = 10 எனில், x இன் மதிப்பு

A

10

B

15

C

25

D

30

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