Number System Revision: Practice Sheet 1 - Videos

perfect thanks sir 🙂 we want more such videos

Wow, what a transformation sir

comment space best used for doubts or better solutions

happy to see u after such a long time..thnkew?

Errata in question no 3. Zero is a whole number, zero is not a natural number got confused in instructions …does not make a difference to the answer …100-0= 100 not being a prime.

could you please do something with lighting , it is not up to the mark , just a request ,cheers

In the first question….I think we divided the P1+P2…. already by 6 and got the summation of remainders….why divide them again?

hi sir

Please help us revise all major topics with such practice sheets..
Thank u sir…

sir, please upload few videos on CAT level PJs and OMOs, TITA format…

Very nicely done.. But one thing.. For whole numbers 0 is allowed 🙂

Sir, thank you for all the videos in your channel. They have been of immense help to me. One request please do continue with these cat workshop sessions.

i could not find the attachment of sheet 2/3…. where can i get it sir??

sir, in the pdf, Q2 is different
it is (x – y)^z × (y – z)^x + (z – x)^y
How to approach it

This format of posting questions and letting us solve is really helpful, please continue for other topics as well. Just one request that you include questions of a higher difficulty level. Thank you.

where is the sheet no 2

Hey in 3 question, one can eliminate subtracting 100 with 2,4,6,8 because even – even will be always even… And no even is a prime number except 2, which we will never get.
So we have to just subtract 100 with the squares of 1,3,5,7,9

Sir u look like Arijit Singh ?

hi sir where can i get the question set plz help me

sir, seen many of ur videos and have learnt a lot but never commented today doing ,u r a great teacher sir (respect)

In 3rd question we can also do it like this
10²-x²= (10-x)(10+x)
So one of them has to be prime and as x is a whole number it can't be negative so (10-x) has to be negative that means x can only be 9.

A little addition to Q 3:
the expression can easily be written as (10+x)(10-x),. i.e. product of 2 numbers. No prime number can be expressed as such. the only possibility being one of them is 1. so 10-x=1. so x=9.

One more error in question no. 22 i.e. 14*3 = 42 and not 52. But the overall session was very helpful, looking forward for more such worksheets.