Best Logical Puzzle

In a contest, four fruits (an apple, a banana, an orange, and a pear) have been placed in four closed boxes (one fruit per box). People may guess which fruit is in which box. 123 people participate in the contest. When the boxes are opened, it turns out that 43 people have guessed none of the fruits correctly, 39 people have guessed one fruit correctly, and 31 people have guessed two fruits correctly. How many people have guessed three fruits correctly, and how many people have guessed four fruits correctly There are three bags.The first bag has two Green marbles. The second…

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Calendar Puzzle

Person born in between 1990 t0 2102 , celebrates its birthday 25 times according to Gregorian calendar , then whats is the day & month of his birth ?   If the end of the world was supposed to come on the first day of a new century, what would be the chances that it would happen on a Sunday? The year 2017 began with a Friday the 13th in January, and another one is due in October. What’s the maximum and minimum number of Friday the 13th’s that there can be in a Gregorian calendar year? In non leap year of…

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Ranjak Vaidic Ganit Second Edition Released

Second Edition of Top innovative MARATHI LANGUAGE book on Arithmetic  titled “Ranjak Vaidic Ganit”  will be released on 18 october 2017 & thereafter it will be available on all major bookstore in Maharashtra, India.  ‘रंजक वैदिक गणित’ हे पूर्णपणे संशोधनपर गणित ग्रंथ असून या ग्रंथाच्या प्रथम आवृतीचा आनंद हजारो विद्यार्थ्यांनी घेतलेला आहे. या ग्रंथात समाविष्ट करण्यात आलेल्या पध्दतीं या अभिनव , लेखक संशोधित- पारंपारिक गणितापेक्षा अनेक पटीने वेगवान आहेत. स्पर्धा परिक्षांत येणारे बेरीज, वजाबाकी, गुणाकार, भागाकार, सरासरी, लसावि, मसावि, वर्गमूळ – घनमूळ, वर्ग – घन व विभाज्यतेच्या कसोट्या इत्यादी अंकगणितावरील प्रश्न या ग्रंथांतील शीघ्र – सुलभ पध्दतीं वापरून केवळ एका ओळीत, क्षणार्धात…

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One Single Master Formula for AVERAGE | VJ’s Mathemagic

Problems on average, alligation – mixture are asked in many competitive exam like STI, PSI, CAT, MBA -CET,IBPS,SBI PO. Generally problem on average, alligation mixture are simple but solving in limited duration or quickly in competitive exam matters a lot. There are thousands of book which gives different tricks to deal with such problem. But remembering shortcut / trick on each specific problem is hectic process. Instead what if we can arrive at single formula, that help us to solve any kind of problem on given topic instantaneously ? For every topic , finding such formula is not possible. But…

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Problem related to Factors / Permutation – Combination

Problems on  factor of number are asked in many competitive exam like SSC CGL, CAT, MBA CET, IIT JEE . Such problem are based on  permutation – combination.  Let us first understand important conceptual fact helpful to solve this kind of problems. Number of ways of selecting r thing from  n different thing  c(n, r) = n ! /{(n-r) ! * (r!) }              = (n) * (n-1) * (n-2) *…*(n-r+2) * (n-r+1) / (1 * 2 * 3 *… * r)  example – c(5, 3) = 5*4*3 / 1*2*3 = 60 /6 = 10 Number…

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Trick to solve Profit & Loss Problem

Fun with QA snap

Problems on Profit & loss are often asked in many competitive examinations like SSC CGL, STI PSI, CAT, MBA, GRE. In this post, we will learn how to deal with specific kind of profit & loss problem. We all know, Profit = Selling Price (SP) – Cost Price.   i.e. P = SP – CP Similarly, Loss = Cost Price – Selling Price. Profit percentage is the profit obtained on per 100 rupees of incurred cost. If profit P is on cost price of  CP Then profit per 1 Rs cost  will be  P / CP Profit on 100 RS…

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Best PC screen Recording Software

Now a days often we need to recording video, lecture for personal purpose or to publish it on social media, Youtube etc. Here are few free open software that I use for video / Audio Recording. Video Recording Software Open Broadcaster Software  – It is free software for window 7, MAC . Camstudio is a free and open source video screen recorder, it records your screen for absolutely free, you can show friends and family what to do or make your own youtube videos. Cons –  CONS:  Can’t edit video directly in the program For Audio recording use Audacity (audio editor) From Wikipedia,…

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Frequently used Urdu words in Hindi Poetry

Hindi language is full of loan words and you would be amazed to see, many words that we use in our daily conversation have foreign origins. This post gives frequently used Urdu world in hindi poetry & their meaning 1) आश्ना – परिचित २) रंजिश – शत्रुता (व्देष) / Ill -will , hostility 3) उन्स – लगाव (affection / attachment) ४) मुख़्तसर – संक्षेप में (short / brief) ५) इल्म – ज्ञान ६) उल्फ़त – मोहब्बत ७) मेहरम – नजदीकी मित्र (Intimate Friend) ८) तिश्नगी – thirst / longing (प्यास, मोह) ९) आग़ाज – शुरूआत १०) कूचा – रास्ता /…

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Few technological trend in upcoming years

he world is actually on internet right now giving way for so many websites and web applications. Web has replaced the concept of distant world into bringing everything closer. Be it shopping or entertainment or communication or work-related , internet and web has solution of everything and a way to make this world better. With new technologies such Artificial Intelligence, Internet of Things and Big Data coming up as foremost subject of research but all these will be dependent on Internet and Web. So if anyone masters the Web technology most suitable to handle all these will be able to…

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Frequently asked JAVA language questions

Here are frequently asked questions on JAVA language. Questions on Java are  often asked  in relevant technical interview. ————————————————— Can a main() method of class be invoked in another class? What is the difference between java command line arguments and C command line arguments? What is the difference between == & .equals ? What is the difference between abstract class & Interface ? What is singleton class & it’s implementation ? Use of static,final variable Examples of final class Difference between Event propagation & Event delegation Difference between Unicast & Multicast model What is a java bean What is synchronized…

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