Mind Teasers : Missing Alphabets In Series

Difficulty Popularity

AR TA GE CA ?? VI LI SC SA CA AQ PI
Find the missing alphabets in series above?
category : SERIES

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Mind Teasers : Three Magic Numbers Puzzle

Difficulty Popularity

Find three magic number such that ?

* Product of three numbers is prime.
* 2nd number - 1st number = 3rd number - 2nd number
category : LOGIC | MATHS

Mind Teasers : Simple Matchstick Riddle

Difficulty Popularity

You can see that four match sticks have been joined in the given figure to form one square.

Can you form five squares using six matchsticks ?

Mind Teasers : Magician Cards Riddle

Difficulty Popularity

A magician has four playing cards in random order in his hand ( 3 4 5 and 6)

Magician wishes them placed in ascending order from his left to his right.

* To do this, he pulls the leftmost card (from viewer perspective) and puts it end.
* He then takes the third card from the right (from viewer perspective) and puts it in end.

What is the original order of the cards from magician perspective?
category : LOGIC

Mind Teasers : Lateral Thinking Puzzle

Difficulty Popularity

Sachin new ferrari car has five wheels(two front wheels, two Rear wheels and one spare wheel).
Real car Wheel will wear out in exact 21000 miles and front wheel will wear out after exact 29000 miles.

What is the maximum distance sachin can cover.

Note: unlimited numbers of changing the tyres can take place.
category : LOGIC

Mind Teasers : Extremely Hard Civil Services Problem

Difficulty Popularity

( ) + ( ) + ( ) + ( ) + ( ) = 30
This is what you have for equation. The following are the numbers that you can use to fill in the brackets:
1, 3, 5, 7, 9, 11, 13 and 15

You can repeat the numbers if required. The resulting sum should be 30.

This question appeared in the UPSC final examination in December 2013. Out of all the people who appeared, only one guy was able to solve this namely Gaurav Agarwal.

Can you solve it?

Mind Teasers : Maths Logical Problem

Difficulty Popularity

The digits 0-9(0,1,2,3,4,5,6,7,8,9) can be rearranged into 3628800 distinct 10 digits numbers.

How many of these numbers are prime ?

Mind Teasers : Smart Math Logic Brain Teaser

Difficulty Popularity

You trade apples from a village to your town. The distance is 1000 miles. This time you were able to get your hands on 3000 apples. You have a truck that can carry just 1000 apples at one time. At every mile is located a check post at which you have to submit 1 apple while going to the town. However, when you travel from town to village, you don’t have to give anything.

How will you make sure that you are able to transport maximum amount of apples to the town?
category : LOGIC | MATHS

Mind Teasers : Difficult Brain Twister

Difficulty Popularity

A strange tradition is followed in an orthodox and undeveloped village. The chief of the village collects taxes from all the males of the village yearly. But it is the method of taking taxes that is interesting.

The taxes paid in the form of grains and every male should pay equal pounds corresponding to his age. In simpler terms, a man aged 10 years will have to pay 10 pounds of grains and a 20 years old will be paying 20 pounds of grain.

The chief stands on a riser containing 7 different weights next to a large 2 pan scale. As per the interesting custom, the chief can only weigh using three of the seven weights.

In such a scenario, can you calculate what must be the weights of the seven weights each and who is the oldest man the chief can measure using those weights?
category : LOGIC | MATHS

Mind Teasers : Frequent Maths Digit Brain Teaser

Difficulty Popularity

Can you identify the most common digit between the number 1 and 1000?
category : LOGIC | MATHS

Mind Teasers : Logical Interview Problem

Difficulty Popularity

Jonathan has three boxes containing milk chocolates and dark chocolates. The problem is that all of them have been labeled incorrectly as follows.
Box1: Dark Chocolates
Box2: Milk Chocolates
Box3: Dark Chocolates and Milk Chocolates

How will he label all the boxes correctly by just opening one box?
category : LOGIC

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