Explanation

Given:

Increment in number = 20% of the number

Decrement in number = 20% of the new number

Concept used:

Net increase or decrease percent = {(Original number or Final number) - (Final number or original number) ÷ Original number} × 100

Calculation:

Let the original number be 100

When the number is increased by 20%

New Number = 100 + 20% of 100

⇒ 100 + 20

⇒ 120

Now, the number is decreased by 20%

Final number = New number – 20% of new number

⇒ 120 – 20% of 120

⇒ 120 – 24

⇒ 96

∴ Net Decrease in percentage = { (100 – 96) / 100} × 100

⇒ {4/100} × 100

⇒ 4%

∴ The net decrease percentage is 4%.

Last verified on 11-07-2026

Explanation

The arrow starts facing North.

It makes 23 turns, alternating between 90° and 180°.

After completing all 23 movements, the arrow faces West.

Last verified on 11-07-2026

Explanation

Reasoning:  

1. A is brother of B → A and B are siblings  

2. B is sister of C → B and C are siblings  

So A, B, C are all siblings.

3. C is mother of D → C is D’s mom

Since A is the brother of D’s mom C, A is D’s maternal uncle.

Last verified on 13-06-2026

Explanation

Premises:  

1. All engineers are intelligent → Engineers are a small circle inside the bigger "Intelligent" circle  

2. Some intelligent people are not doctors → There’s a part of "Intelligent" that’s outside "Doctors"

Conclusion I: Some engineers are not doctors  

Not necessarily. The "intelligent people who are not doctors" could all be artists, teachers, etc. Engineers might still all be doctors. So I doesn’t follow.

Conclusion II: All doctors are intelligent 

No info given about doctors. Some intelligent people aren’t doctors, but that says nothing about doctors being intelligent or not. So II doesn’t follow.

So from your options: Neither follows

Last verified on 13-06-2026

Explanation

"All roses are flowers" → Every rose is inside the "flowers" circle. So some flowers = roses is definitely true.

"Some flowers fade quickly" → Only tells us about _some_ flowers, not all. We don’t know if those fading flowers are roses or not.

So: "Some flowers are roses" → Must be true, because all roses are flowers.

Last verified on 13-06-2026