Q:

Puzzle : Bridge Crossing

Jim, Jeanne, Louis and Anne wants to cross the bridge at night. They have only one torch light with them. Only two can cross the bridge at a time. They need torch light to cross the bridge. Each of them walks at a different speed. Jim needs 1 minute, Jeanne needs 2 minutes, Louis needs 5 minutes and Anne needs 10 minutes. A pair must walk together at the rate of the slower person. How these people can cross the bridge within 17 minutes?

Answer

First Jim and Jeanne walks across the bridge, it takes 2 minutes.

Jim walks back with the torch light, which takes 1 minute.

Then Louis and Anne walk on the bridge, which takes 10 minutes.

Jeanne comes back with the torch light, it takes 2 minutes.

Finally Jim and Jeanne walks across the bridge, which takes 2 minutes.

Total = 2 + 1 + 10 + 2 + 2 = 17 minutes

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Subject: Math Puzzles

17 8435

Q:

which of the following physical quantity is dimensionless

A) angle	B) strain
C) specific gravity	D) all of these

Answer & Explanation Answer: D) all of these

Explanation:

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Filed Under: Physics

21 8435

Q:

When combining with nonmetallic atoms, metallic atoms generally will

A) Lose electrons and forms cations	B) Gain electrons and forms anions
C) Lose electrons and forms anions	D) Gain electrons and forms cations

Answer & Explanation Answer: A) Lose electrons and forms cations

Explanation:

When combining with nonmetallic atoms, metallic atoms generally will Lose electrons and forms cations.

As the ionization energy of te metals are very low, so they can easily lose electrons and form positively charged ion called cations.

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Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , IT Trainer

3 8432

Q:

Grand Vitara XV-7 is a vehicle launched by

A) Ford	B) GM
C) Maruti Suzuki	D) Hyundai

Answer & Explanation Answer: C) Maruti Suzuki

Explanation:

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Filed Under: Business Awareness

46 8418

Q:

One of the best known tribal rebellions in Bihar, Known as Ulgulan (meaning Great Tumult), was launched by the Mundas under the leadership of:

A) Kanhu	B) Sidhu
C) Birsa Munda	D) Rampa Munda

Answer & Explanation Answer: C) Birsa Munda

Explanation:

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Filed Under: Indian History

9 8416

Q:

When is a system in safe state?

Answer

The set of dispatchable processes is in a safe state if there exists at least one temporal order in which all processes can be run to completion without resulting in a deadlock.

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Subject: Operating Systems

7 8415

Q:

Who was the first person to cross the Alps with army

A) Hannibal	B) Napolean
C) Alexander	D) None of these

Answer & Explanation Answer: A) Hannibal

Explanation:

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Filed Under: Famous Personalities

6 8414

Q:

Which of the following is a vector quantity

A) momentum	B) pressure
C) Energy	D) work

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