Mathematics
Deepak Gupta's user avatar
Deepak Gupta's user avatar
Deepak Gupta's user avatar
Deepak Gupta
  • Member for 8 years, 3 months
  • Last seen more than 2 years ago
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25
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3
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7
Score
4
Posts
14
Posts %
3
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4
Posts
14
Posts %
3
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2
Posts
7
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2
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7
Posts %
1
Score
4
Posts
14
Posts %
1
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3
Posts
11
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View all questions and answers
All Questions Answers
Score Newest
question
8
Prove that if $7^n-3^n$ is divisible by $n>1$, then $n$ must be even.
Dec 16, 2015
answer
4
If $\sqrt{n}$ is not an integer, are there any rational numbers $x$ such that $x^2 = n$?
Sep 9, 2015
answer
3
If AB is a common tangent to two circles, prove that the circle in AB as a diameter cuts each of the circles orthogonally
Sep 22, 2015
answer
3
How to apply the binomial theorem to $(a^n - b^n)/(a - b)$?
Dec 17, 2015
question
2
Geometry/Trigonometry Determine angle in a Triangle [duplicate]
Sep 2, 2015
question
2
Establish necessary and sufficient condition for specific matrix color configuration
May 16, 2018
answer
2
Combinatorial proof $\sum_{i=1}^n i/(i + 1)! = 1 - 1/(n+1)!\quad\forall n\in\mathbb N$
Sep 1, 2015
answer
2
Why doesn't quadratic formula lead to a the correct factored form of the original equation?
Sep 1, 2015
answer
2
prove that $24 \mid a(a^2-1)$
Sep 9, 2015
answer
2
Friday the 13th future possible
Sep 21, 2015

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