Challenger App

No.1 PSC Learning App

★
★
★
★
★
1M+ Downloads

Study the given diagram carefully and answer the following question. The numbers in different sections indicate the number of persons in a small village relying on different sources of energy for their daily needs.

image.png

How many people rely on only one source of energy?

A28

B77

C40

D12

Answer:

C. 40

Read Explanation:

The number of people who rely on both Solar energy and Coal energy is 40.

To find the number of people relying on both Solar and Coal energy, we must look at the overlapping intersection area between the Solar energy circle (top-left) and the Coal energy circle (top-right).

This intersection contains two numbers:

  • 28: People who rely on Solar and Coal energy only.

  • 12: People who rely on Solar, Coal, and Wind energy (they still rely on Solar and Coal).

Adding them together gives the total:
28+12=4028 + 12 = 40


Related Questions:

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

Statements:

All toys are plastics.

All plastics are disposables.

Some toys are fibres.

Conclusions:

(I) Some fibres are plastics.

(II) Some disposables are fibres.

(III) No fibre is a disposable.

Three statements are given, followed by three conclusions numbered I, II and III. 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(s) from the statements.

Statements:

1. All blazers are dungarees.

2. No dungaree is scarf.

3. All pyjamas are dungarees.

Conclusions:

I. No blazer is scarf.

II. No blazer is pyjama.

III. Some blazers are pyjamas.

Three statements are followed by four conclusions numbered 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 statement.

Statements:

1. No paint is fresco.

2. No fresco is lacquer.

3. Some paints are lacquers.

Conclusions:

I. No lacquer is paint.

II. No lacquer is fresco.

III. Some frescos are paints.

IV. All lacquers are paints.

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

Statements:

Some eggs are wheats

Some fruits are guavas

All guavas are lemons

Conclusions:

(I) Some fruits are wheats.

(II) Some lemons are fruits

(III) Some eggs are guavas

Select the Venn diagram that best illustrate the relationship between the following classes. Petrol, Car, Electric.

4.jpeg