Problem Solving | MCQs

Explanation

"We tried to tide over our difficulties".

ہم نے اپنی مشکلات پر قابو پانے کی کوشش کی۔

It means to manage or overcome challenges temporarily until they are resolved.

Explanation

Let us convert the given word expression into a numerical format by deriving each term and its operation.

The operation of multiplication or 'x' in words is 'times'.

Eight times of a number b is denoted by 8xb = 8b.

Ten times of a number c is denoted by 10xc = 10c.

The operation of subtraction is denoted by ' - '.

Since we are subtracting eight times the number b from ten times the number c, we will write the term 10c first and then place the operation sign (of subtraction), which is followed by the next term 10c.

Hence, the required expression is = 10c- 8b.

ND12_8_2023

Explanation

An algorithm is a step-by-step, well-defined list of instructions written in natural or simple language to solve a specific problem.

It serves as a blueprint for writing a program or creating a flowchart.

Explanation

cat is to a kitten as the dog is to a puppy.

Reason: the young cat is called a kitten while the young one of dog is called a pup or puppy

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nd12-2022

Explanation

Present Continuous Tense

Active Voice: Subject + is/am/are + First of verb + ing + obect.

Passive Voice: Object + is being/am being/ are being + third form of verb + by + subject.

Active Voice: I am doing sums.

Passive Voice:  Sums are being done by me.

Do is a regular verb which means کرنا

Do means perform.

Did is the second form while done is the third form of Do. 

Explanation

Seek is a verb which means get or achieve.

Sought is the second and third form of seek.

Present Indefinite Tense

Active Voice: Subject + Verb + Object

Passive Voice: Object + is/am/are+ third form of a verb + by + subject.

Explanation

Here is a question to solve is a sentence of present tense.

Is means ہے

A means ایک

Question means سوال

Solve means حل کرنا

Present Indefinite Tense

Active Voice: Subject + Verb + Object

Passive Voice: Object + is/am/are+ third form of a verb + by + subject.

Explanation

The phrase "suggestions for improving" is the correct collocation.

Correct sentence: "The rest of the class listened carefully and gave suggestions for improving the plan."

Explanation

Cul de sac means dead end. 

A cul de sac refers to a street or passage with only one entrance, ending in a closed loop or dead end.

Explanation

 Convert the speeds of the trains from km/h to m/s

1 km/h = 1000 m/3600 s

Speed of the first train = 60 km/h = (60,000 m/3600 s) m/s = 16.67 m/s.

Speed of the second train = 45 km/h = (45,000 m/3600 s) m/s = 12.50 m/s.

Relative speed = Speed of the first train - Speed of the second train = 16.67 m/s - 12.50 m/s = 4.17 m/s.

Distance = Length of the second train = 500 meters.

Using the formula:

Distance = Speed × Time

Time = Distance / Relative speed = 500 meters / 4.17 m/s = 120.05 seconds.

To convert the time from seconds to minutes, we divide by 60:

Time in minutes = 120.05 seconds / 60 = 2 minutes (approximately).

Therefore, the first train will cross the second train after approximately 2 minutes.