English, asked by Anonymous, 3 months ago

let U be the universal set,and a and b be any two sets.if n(u)=20,n(a)=12,n(b)=4 and n(aintersection b)'=17,find the following.


i.n(a intersection b)
ii.n(a union b)
iii.n(a-b),
iv.n(b-a)


the answer are
i. 3
ii. 13
iii.9
iv. 1


pls show with the steps

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Answers

Answered by Itsanshita
8

Answer:

(a) Plasmolysis can be defined as the shrinkage of the cytoplasm of a plant cell, away from its cell wall and toward the centre. It occurs because of the movement of water from the intracellular space to the outer-cellular space. This happens when the plant cell is placed in a hypertonic solution (i.e., a solution having more solute concentration than the cell cytoplasm). This causes the water to move out of the cell and toward the solution. The cytoplasm of the cell shrinks and the cell is said to be plasmolysed. This process can be observed in an onion peel kept in a highly concentrated salt solution.

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Answered by kajalshrivastava0854
7

Answer:

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