About Bulls Eye
Bulls Eye started in 1996 in Pune by a group of IIM and XLRI alumni and professionals with top-notch industry experience. Bulls Eye started in 1996 in Pune by a group of IIM and XLRI alumni...more »

Tickle Your Grey Cells

Puzzle corner is a dedicated section for honing analytical, mathematical and reasoning skills. In this section every week you will find five Puzzles. Theses mind twisters have been carefully selected after a thorough research and provide right inputs for tickling your grey cells. Solving puzzles is considered very good exercise so as to remain mentally active. Puzzle solving enhances memory and processing speed.

Puzzle is one of the most popular category in competitive examinations. All the major Indian MBA entrance exams like CAT, MAT, XAT and SNAP have direct questions or questions based on similar logics in written test. Besides MBA exams, competitive exams like GRE, GMAT, Bank PO, SSC & other government exams include puzzle questions. Most of the companies while recruiting through campus includes Puzzles in the written tests or at interview stage. Hence those who are preparing for campus placement tests this section is a must.

Week of the Year 

There are 70 teachers employed with Bulls Eye company, of which 30 are females.
(1) 30 teachers are married.
(2) 24 teachers are above 31 years of age.
(3) 19 married teachers are above 31 years of which 7 are males.
(4) 12 males are above 31 years of age.
(5) 15 males are married.
How many of unmarried females are above 31 years of age?
Total there are 30 females and 40 males. Out of females 15 are married and out of these 15, twelve females are of above 31 years of age, 15 females are unmarried . Out of males, 15 males are married, out of these 15, seven males are above 31 years of age and 25 males are unmarried and out of these 25 males, 5 males are above 31 years of age. Thus, no unmarried female (0) is above 31 years of age.


Married, above 31 years

Married, below 31 years

Unmarried, above 31 years

Unmarried, below 31 years
























Vivek, a chain smoker, one day found it extremely difficult to go out to the market to get some cigarettes . He had some cigarette butts with him and he could pull tobacco out of some butts. 5 butts of tobacco make a cigarette. He collected the tobacco and made the cigarettes from the 121 butts available with him. How many cigarettes would he be able to smoke?
120/5 = 24 cigarettes and from (24 + 1) cigarettes, 25/5= 5 cigarettes, and then 5/5 = 1 cigarette. Thus total number of cigarettes, he can roll = 24+5+1 = 30 cigarettes.

In how many ways can the members be arranged around a circle so that there is exactly one female between the two sisters present in a group of 20 kitty members?
18 members can be arranged around a circle in 17! ways. There are exactly 18 places where the two sisters can be arranged. The sisters can be arranged in 2! ways.
Therefore, the total number of ways 17! * 2! * 18 = 2 * 18!

Find the next 2 numbers in the series: 1, 8, 11, 69, 88, 96, 101, 111, 181, ...
The next 2 numbers in the series will be 609 and 619. All numbers are the same when flipped upside-down (known as invertible numbers). Only 1, 6, 8, 9 and 0 represent digitss which when inverted produce the same digit or another digit (as in case of 6 and 9).

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