Interview Questions.

Top 100+ Brainteaser Interview Questions And Answers


Top 100+ Brainteaser Interview Questions And Answers

Question 1. You’re In A Room With Three Light Switches, Each Of Which Controls One Of The Three Light Bulbs In The Next Room. Find Out Which Switch Controls Which Bulb. All Lights Are Initially Off, And You Cannot See Into One Room From The Other. You Can Check The Room Only Once. How Can You Determine Which Switch Is Connected To Which Light Bulb?

Answer :

Call the switches 1, 2, and 3. Leave Switch 1 off. Turn Switch 2 on for 5 mins and then turn it off. Turn Switch 3 on and depart it on. Enter the room. The bulb that is on is managed by Switch 3 (the only you left on). Feel the light bulbs which are off for warmth. The bulb this is off and heat is controlled by Switch 2 (the only you grew to become on, then off). The bulb this is off and bloodless is controlled via Switch 1 (the one which you didn't activate).

Question 2. Here's A Mobile Phone. Deconstruct It For Me?

Answer :

Instead of describing what it looks as if, attempt to become aware of what it does and the way it could help operations inside the enterprise by simply going through and speaking approximately its capability, e.G., "this can be used to shop contact information, make phone calls, ship emails, take images or films, and so on." You may also relate it to the job or the place of job and talk approximately how the mobile phone might be used.

CAT - Common Admission Test Interview Questions
Question three. An Apple Costs 40 Cents, A Banana Costs 60 Cents, And A Grapefruit Costs 80 Cents. How Much Does A Pear Cost?

Answer :

If you charge 20 cents consistent with vowel, the two-vowel phrase "apple" could price 40 cents, three-vowel "banana" 60 cents, and 4-vowel "grapefruit" 80 cents. Therefore a pear could fee 40 cents.

Question four. Describe The Internet To Someone Who Woke Up From A 30-year Coma?

Answer :

Try to reply this query with plenty of creativity and humor, like − “I might ask him if he recollects any film in which people used to look at a crystal ball and inform what became taking place miles away. I might say Internet is that magic crystal ball of the prevailing time".

Question 5. A Scientist Puts A Bacteria In A Petri Dish At Exactly Noon. Every Minute, The Bacteria Divides Into Two. At Exactly 1 Pm, The Petri Dish Is Full. At What Time Was The Dish Half Full?

Answer :

Don't suppose exponential increase and the sort of micro organism that's within the dish. If the micro organism doubles each minute, and it's complete at 1 pm, it must were 1/2-full a minute in advance, at 12:59.

Reasoning Interview Questions
Question 6. Is It Better To Be Perfect And Late, Or Good And On Time?

Answer :

This query is designed in any such way that you can truly become aware of a proper and wrong option. However, this question could be efficaciously answered in case you examine the indicators that the interviewer sends thru gestures and body language. As a general rule, managers pick “exact and on time”, as they don’t recognize work to live pending because of the personnel’ want for perfection.

Question 7. "who Is The Smartest Person You Know Personally? Why?"

Answer :

These questions check what the candidate values and aspirations by means of asking them to consider a real man or woman they realize, after which describe what makes that person clever. Notable characteristics are someone’s capacity to suppose ahead several steps and execute those thoughts, selection-making abilties, and their potential to connect to others.

Aptitude Interview Questions
Question 8. You Wake Up Early One Morning And Find The Light In Your Bedroom Is Broke. You Get Dressed In The Dark. Your Drawer Has Socks Of Three Different Colors: Red, Yellow, And Blue. How Many Socks Do You Have To Take Out To Be Certain Of Having A Matching Pair?

Answer :

Let’s start drawing socks. There could be three eventualities −

If the first sock is red. If the second one is purple, you have an identical pair. But what if it is isn’t red?

If the second one sock is yellow. If the third is either yellow or crimson, then you definitely have a couple. If it's miles blue, then you definately draw again.

If the third sock is blue. Now you have one of each. Since your next sock have to be either purple, yellow, or blue, you are certain to have a couple.

Once you have got 4 socks, you're guaranteed to have a pair

Question nine. Why Are Manhole Covers Round And Not Square?

Answer :

Manhole covers are spherical in order that they gained’t fall into the manholes, as rectangular covers could be dropped into the manholes if held diagonally.

Communication Skills Interview Questions
Question 10. You Are Blindfolded And Sit In Front Of A Table. On The Table Are Many Coins, 10 Of Which Have Heads Facing Up. How Do You Split The Group Of Coins Into Two Groups Such That The Same Number Of Coins Are Heads-up In Each Group?

Answer :

You don’t recognize what number of cash there are and you could’t inform which aspect is facing up in any manner.

Let’s say there are 50 coins and we separate 10 of them. Now we've got a set of 10 and a collection of 40.

Let’s expect there are three heads within the group of 10. Then there will be 7 heads in the organization of 40.


Now we flip over all the coins inside the institution of 10.


That’s it! 7 heads in every institution!