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Rohinb97's user avatar
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Rohinb97
  • Member for 11 years
  • Last seen more than a month ago
26 votes
1 answer
118k views

How do we calculate factorials for numbers with decimal places? [duplicate]

10 votes
4 answers
2k views

What is the product of this by telescopic method?

8 votes
2 answers
11k views

How to solve equations with logarithms, like this: $ ax + b\log(x) + c=0$

6 votes
1 answer
1k views

The security guard problem

6 votes
1 answer
126 views

Computing area of triangle via equations of medians

4 votes
2 answers
243 views

Is it a Fermat polynomial? [duplicate]

4 votes
3 answers
2k views

What is wrong with this method for a rotated and shifted parabola?

4 votes
3 answers
292 views

Integrating $\int\dfrac{\mathrm{d}x}{1+\sin x+\cos x}$

4 votes
1 answer
7k views

Can you calculate the accuracy of a calculator?

4 votes
1 answer
998 views

Probability problem- Are there atleast 3 balls with same colour radius and in same box?

3 votes
4 answers
5k views

What is the remainder when $2^{1990}$ is divided by $1990$?

3 votes
1 answer
167 views

Is the square root of $4$ only $+2$? [duplicate]

3 votes
2 answers
2k views

How can you pick the odd marble by 3 steps in this case?

3 votes
3 answers
1k views

If $x+y+z=xyz$, find $\frac{3x-x^3}{1-3x^2}+\frac{3y-y^3}{1-3y^2}+\frac{3z-z^3}{1-3z^2}$

3 votes
3 answers
4k views

The probability that in a word made from a set of 16 letters exactly two are repeated

3 votes
7 answers
101 views

Sum of sequence of $\binom{n}{r}$

3 votes
2 answers
145 views

How to solve $\int \frac{(x-1)\sqrt{x^4+2x^3-x^2+2x+1}}{x^2(x+1)}dx$?

2 votes
0 answers
112 views

Maximum product of lengths involving secant drawn to a parabola.

2 votes
1 answer
52 views

Mathematical series regarding complex (I think)

2 votes
1 answer
621 views

What is the basic idea of homogenisation of an equation?

2 votes
2 answers
225 views

What is the sum of this by telescopic method?

2 votes
3 answers
554 views

Sum of a series to be attempted by telescopic method.

1 vote
2 answers
124 views

If $A=(-4,0)$ and $B=(4,0)$, what is the locus of points $P$ such that $|AP-BP|=16$? Does it even exist?

1 vote
4 answers
2k views

How can I find integer values for which a given expression gives a perfect square?

1 vote
3 answers
2k views

What books to refer while preparing for rmo?

1 vote
0 answers
282 views

Is the conjugate axis in hyperbola just a number?

1 vote
1 answer
230 views

Is there a logic for recursion rules of divisibility?

1 vote
4 answers
281 views

Evaluating $\int \tan^{1/3}(\theta) d \theta$

1 vote
1 answer
1k views

Probability of a random triangle containing the center of a polygon

1 vote
1 answer
647 views

Least value of n that makes the nth derivative of the function non zero at $x=0$