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Study the given diagram carefully and answer the following question. The numbers in different sections indicate the number of persons who use the electronic item.

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How many people use both laptop and television?

A19

B23

C42

D56

Answer:

C. 42

Read Explanation:

The number of people who use both Laptop and Television is 42.

To find the number of people in the intersection of Laptop and Television, you need to add the numbers from two overlapping sections:

  1. People who use only Laptop and Television (but not Smart phones) = 23

  2. People who use all three items (Smart phones, Laptop, and Television) = 19

Total=23+19=42\text{Total} = 23 + 19 = \mathbf{42}


Related Questions:

Seven people S,E,CT,I,O and N are sitting around a circular table facing the centre.(but not necessarily in the same order). E is sitting second to the left of N, While N is sitting second to the left of S. Only one person is sitting between S and O when counted from the right of S. C is sitting to the immediate right of E, whereas T is sitting to the immediate left of O. Who is sitting to the immediate right of I ?
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Study the given diagram carefully and answer the question. The numbers in different sections indicate the number of persons.

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How many such fathers are there who are also movie lovers but not engineers?

Three statements are given, followed by two conclusions numbered I and II. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(5) from the statements.

Statements:

Some beds are tables.

Some tables are cupboards.

Some cupboards are chairs.

Conclusions:

I. Some chairs are beds.

II. Some beds are cupboards.

Three statements are given followed by four conclusions I, II, III and IV. You have to consider these statements to be true, even if they seem at variance from commonly known facts. Decide which of the given conclusions logically follow/s from the given statements.

Statements:

1. Some pamphlets are copies.

2. All copies are readers.

3. All readers are scrolls.

Conclusions:

I. All pamphlets are scrolls.

II. All copies are scrolls.

III. Some readers are copies.

IV. Some scrolls are pamphlets.