Dr. Charles Simonyi is the Father of Modern Microsoft Excel                                           JavaScript was originally developed by Brendan Eich of Netscape under the name Mocha, later LiveScript, and finally renamed to JavaScript.                                           The word "Biology" is firstly used by Lamarck and Treviranus                                           Hippocrates (460-370 bc) is known as father of medicine.                                           Galene, 130-200 is known as father of Experimental Physology                                           Aristotle (384-322 BC) is known as Father of Zoology because he wrote the construction and behavior of different animals in his book "Historia animalium"                                           Theophrastus(370-285 BC) is known as father of Botany because he wrote about 500 different plants in his book "Historia Plantarum".                                           John Resig is known as Father of Jquery -                                          HTML is a markup language which is use to design web pages. It was invented in 1990 by Tim Berners-Lee.                                                                The Google was founded by Larry Page and Sergey Brin.                                                                Rasmus Lerdorf was the original creator of PHP. It was first released in 1995.                                                               Facebook was founded by Mark Zuckerberg                                                               Bjarne Stroustrup, creator of C++.                                                                Dennis Ritchie creator of C                                                                                                                              James Gosling, also known as the "Father of Java"                                          At 11.44%, Bihar is India's fastest growing state                                          Father of HTML -Tim Berners Lee                                          orkut was created by Orkut Büyükkökten, a Turkish software engineer                    Photoshop: It came about after Thomas Knoll, a PhD student at the University of Michigan created a program to display grayscale images on a monochrome monitor which at the time was called 'Display'.


An accurate clock shows 8 o'clock in the morning. Through how may degrees will the hour hand rotate when the clock shows 2 o'clock in the afternoon?

Angle traced by the hour hand in 6 hours =360x 6º= 180º

The reflex angle between the hands of a clock at 10.25 is:

Angle traced by hour hand in125hrs =360x125º= 3121º.

Angle traced by minute hand in 25 min =360x 25º= 150º.

 Reflex angle = 360º -3121- 150º= 360º - 1621º= 1971.

A clock is started at noon. By 10 minutes past 5, the hour hand has turned through:


Angle traced by hour hand in 12 hrs = 360º.

Angle traced by hour hand in 5 hrs 10 min. i.e.,31hrs =360x31º= 155º.

A watch which gains 5 seconds in 3 minutes was set right at 7 a.m. In the afternoon of the same day, when the watch indicated quarter past 4 o'clock, the true time is:

Time from 7 a.m. to 4.15 p.m. = 9 hrs 15 min. =37hrs.

3 min. 5 sec. of this clock = 3 min. of the correct clock.

37hrs of this clock =1hrs of the correct clock.

37hrs of this clock =1x720x37hrs of the correct clock.

      = 9 hrs of the correct clock.
 The correct time is 9 hrs after 7 a.m. i.e., 4 p.m.

How much does a watch lose per day, if its hands coincide every 64 minutes?


55 min. spaces are covered in 60 min.

60 min. spaces are covered in60x 60min.= 655min.

Loss in 64 min. =655- 64=16min.

Loss in 24 hrs =16x1x 24 x 60min.=328min.

At what time between 7 and 8 o'clock will the hands of a clock be in the same straight line but, not together?

When the hands of the clock are in the same straight line but not together, they are 30 minute spaces apart.
At 7 o'clock, they are 25 min. spaces apart.
 Minute hand will have to gain only 5 min. spaces.
55 min. spaces are gained in 60 min.

5 min. spaces are gained in60x 5min= 55min.

 Required time = 55min. past 7.

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