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CBSE Class 10 Free Doubts and Solutions

CBSE - X - Biology

why growth is not considered as a life process

Asked by manyakalra18 21st February 2019, 10:40 AM
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CBSE - X - Physics

What is accomdation of eye

Asked by mirtowfeeq21 21st February 2019, 10:09 AM

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CBSE - X - Mathematics

If -5 is a zero of quadratic equation 2xsquare+px-15=0 and the quadratic equation p(xsquare+x)k=0 has equal roots, find the value of k  

Asked by mssagarlm10 21st February 2019, 5:25 AM

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CBSE - X - Mathematics

prove that square root of 3+square root of 5 is an irrational.

Asked by poshi.mails 20th February 2019, 10:33 PM
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CBSE - X - Chemistry

mam/sir, I uploaded one photo in which I made my own formula to find the number of covalent bonds in a hydrocarbon so will you tell me that it really works or not?

Asked by krishdabhoya2003 20th February 2019, 9:32 PM
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CBSE - X - Mathematics

If the sum of m terms of an AP is equal to the sum of either the next n terms or the next p terms of the same AP prove that (m+ n) [(1/m)-(1/p)] = (m + p) [(1/m) -(1/n)] .

Asked by rushabhjain.avv 20th February 2019, 9:02 PM
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CBSE - X - Mathematics

In an AP of which ‘a’ is the Ist term, if the sum of the Ist p terms is equal to zero , show that the sum of the next q terms is -a (p+ q) q/(p-1).

Asked by rushabhjain.avv 20th February 2019, 8:57 PM

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