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Krishna Shukla posted an Question

June 16, 2021 • 21:51 pm

30 points

IIT JAM
Mathematics (MA)

How to do following question atteched in the following image.....

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K
Krishna shukla

bit there cant be contradiction in answer it should be unique then why we are getting this paradox??
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K
Krishna shukla

sir i am getting 125 too in this wy .|1 -1 1 -1 1 | |-1 1 -1 1 -1| |1 -1 1 -1 1 |. =A |-1 1 -1 1 - 1| |1 -1 1 -1 1| Then A²= 5A and A³ = A².A= (5A)A=5A²=25A and sum of all entries of A is 5 so 25×5= 125
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you have also write sum of all entries is 5 ( as question asked ) . Why you have multiplied 25×5 =125?
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K
Krishna shukla

sir i m getting 125 too
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my answer is 5 .
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>
Deepak singh 1

Refer attachment Answer is 5
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sir pls once tell what am i missing ...i was trying to use below property....i know its wrong as 1 is not there in option but pls tell what i am missing sir
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sir but ans is true
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Oops , I don't read your complete question . Answer is true . Above result is for sum of all entries of P^m and your question is different .
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sir this is my query..i think i was not clear pls once read this
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sir pls once tell
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Refer attachment
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read both question again carefully . These question are different .
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got it now sir...thanks a lot sir
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