CrazyEngineers

Difficulty - Hard

Total Plays - 206

Allowed Time - 15 sec

Best time - 0.457

A father is 36 years old and his son is 6. In how many years will the father be exactly three times as old as the son?

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Explanation:
In 9 years, father will be 45 and son will be 15. 45 is 3 times 15.

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Difficulty - Medium

Total Plays - 149

Allowed Time - 10 sec

Best time - 1.324 sec

Identify the next number in the series -

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2 -> 3 -> 5 -> 7 -> 11 -> [ ? ]

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Explanation:
These are prime numbers. 13 is the next prime after 11.

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Difficulty - Hard

Total Plays - 112

Allowed Time - 15 sec

Best time - 1.063

The average of five consecutive even numbers is 24. What is the smallest number?

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Explanation:
Average = middle term = 24. Numbers = 20, 22, 24, 26, 28. Smallest = 22.

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Difficulty - Medium

Total Plays - 149

Allowed Time - 10 sec

Best time - 0.380 sec

If it takes 5 machines 5 minutes to make 5 widgets, how long would 100 machines take to make 100 widgets?

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Explanation:
Each machine makes 1 widget in 5 minutes. So 100 machines will make 100 widgets in 5 minutes, working in parallel.

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Difficulty - Hard

Total Plays - 130

Allowed Time - 15 sec

Best time - 0.515

What is the antonym of “Obscure”?

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Explanation:
"Obscure" means unclear or hidden. Its opposite is clear.

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Difficulty - Medium

Total Plays - 129

Allowed Time - 10 sec

Best time - 1.262

Choose the word that best fits the sentence:

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He is very good ___ playing chess.

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Explanation:
The correct preposition after "good" (when talking about skill) is "at".

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Difficulty - Medium

Total Plays - 138

Allowed Time - 10 sec

Best time - 0.582

What does a capacitor store?

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Explanation:
A capacitor stores energy in the form of an electric field between its plates. It doesn't store current or voltage directly.

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Difficulty - Medium

Total Plays - 122

Allowed Time - 10 sec

Best time - 0.887

Identify Next Number In the Series: 2, 6, 12, 20, 30, ?

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Explanation:
The pattern is +4, +6, +8, +10, +12... So, 30 + 12 = 42

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Difficulty - Medium

Total Plays - 108

Allowed Time - 10 sec

Best time - 1.610

Identify this commonly used engineering tool

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Explanation:
A claw hammer is used for driving nails into wood and removing them using the curved claw. It’s a common tool in carpentry and general household repairs.

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Difficulty - Medium

Total Plays - 109

Allowed Time - 10 sec

Best time - 1.225 sec

Identify this famous logo of famous energy drink

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Explanation:
This is the logo of famous energy drink "Red Bull"

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Difficulty - Easy

Total Plays - 140

Allowed Time - 5 sec

Best time - 1.624 sec

Identify this famous personality

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Explanation:
Linus Benedict Torvalds is a Finnish software engineer who is the creator and lead developer of the Linux kernel

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Divya Chella
@wHezkMx • Apr 3, 2026

Apr 3, 2026
451.9K

Job opportunities in Software Testing for B.Com?

I'm Experienced in Non IT background, but the enthusiasm to work in Software Testing makes me to again ask this question, Shall the recruitment management consider me to give a...

Like 12 Replies 4
Shekar Pawar
@1lz31yQ • Apr 3, 2026

Apr 3, 2026
493.1K

TCS Eligibility Criteria

Hello, I took the TCS Free NQT in February but was rejected. I applied again in April for the TCS Free NQT and received a Prime offer. However, the TCS...

Like 12 Replies 3
Difficulty - Medium

Total Plays - 93

Allowed Time - 10 sec

Best time - 1.058 sec

Choose the word most similar in meaning to: "Eloquent"

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Explanation:
“Eloquent” refers to clear, strong, and persuasive speech or writing.

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sunit.soni
@sunitsoni-iK2OBk • Jun 29, 2026

Jun 29, 2026
18.2K

Track Current Location of Mobile

Is there any way to find the current location of mobile number using Internet? I'm specifically interested in finding out a service that will accept a person's mobile number as...

Like 10 Replies 111
Difficulty - Medium

Total Plays - 85

Allowed Time - 10 sec

Best time - 1.659 sec

What is the next number in the series?

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2 -> 4 -> 8 -> 16 -> ??

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Explanation:
Each number is multiplied by 2 to get the next number (2×2=4, 4×2=8, etc.).

Leaderboard
Difficulty - Hard

Total Plays - 99

Allowed Time - 15 sec

Best time - 1.592 sec

A clock shows the time as 3:15. What is the angle between the hour and the minute hands?

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Explanation:
At 3:15, the minute hand is at 3 (i.e., 90°), and the hour hand is slightly ahead of 3. Every minute, the hour hand moves 0.5°, so in 15 minutes, it moves 7.5°. So, angle between them = 90° - 7.5° = 7.5°.

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Difficulty - Medium

Total Plays - 90

Allowed Time - 10 sec

Best time - 1.230

Engineers' Day in India is celebrated on September 15 to honor which famous Indian engineer?

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Explanation:
Mokshagundam Visvesvaraya was a legendary civil engineer and Bharat Ratna awardee. His birthday, September 15, is celebrated as Engineers' Day in India.

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Kaustubh Katdare
@thebigk • Oct 15, 2025

Oct 15, 2025
22.3K

Will AI Agents Replace Engineers in the Future?

I wonder if AI agents will replace engineers in near future. I want to seek your opinions on this topic because we have engineers from diverse backgrounds and experiences. AI...

Like 9 Replies 5
Difficulty - Medium

Total Plays - 93

Allowed Time - 10 sec

Best time - 1.035

CrazyEngineers was founded in which year?

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Explanation:
CrazyEngineers was founded in 2005 to bring together engineers from around the world to share ideas, projects, and innovations.

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