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Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is: A. 1 : 3 B. 3 : 2 C. 3 : 4 D. None of these

Asked by Srikanth Bala 06/02/2015 Last Modified 06/02/2015

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Hey Akshay try this for a change The positive rational numbers may be arranged in the form of a simple series as follows ( 1 / 1 ), ( 2 / 1 ), ( 1 / 2 ) , ( 3 / 1 ), ( 2 / 2 ), ( 1 / 3 ) , ( 4 / 1 ) , ( 3 / 2 ), ( 2 / 3), ( 1 / 4 ), ... Show that ( p / q ) is the [ ( 1 / 2 ) ( p + q - 1 ) ( p + q - 2 ) + q ] th term of the series. I see you like solving problems on mathematics so give it an honest try on your own Also to those boasting about years of experience in mathematics, please stop boasting about yourself before the rest of the teachers. If you are good, you are good and I do not doubt that. We all are here to help and not boast and this space is for questions only and not boasting. Hope you all keep this in mind.

As is visible, this relates to the partitioning of numbers without repetition. Let p+q = t Let us see the partitioning of 't' for 1st term 't' = 2 = 1+1 2nd term 3= 2+1 = 1+2 And so...

Santosh

2 1

The charge moving parallel to the magnetic field ‘B’ with a certain velocity ‘v’ experiences __________. (No force, Maximum force, Minimum Force, None of these)

no force

Narendra Kumar

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What are the best possible ways to promote yourself among students ?

This is the advt. period. No one can identify your ability. Maximum parents and students become impractical. So you should explain your teaching technique and assure him for progressive success.

Amanjeet Singh

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Thermocouples convert __________. (chemical energy into electrical energy, heat energy into electrical energy, mechanical energy into electrical energy, light energy into electrical energy)

Heat energy into electrical energy

Narendra Kumar

0 0

. __________ is a device used to measure the degree of hotness or coldness of the object. (Thermometer, Barometer, Hypsometer, None of these)

Thermometer

Narendra Kumar

0 0

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