TS EAMCET · Maths · Permutation Combination
If a polygon of \(n\) sides has 275 diagonals, then \(n\) is equal to
- A \(25\)
- B \(35\)
- C \(20\)
- D \(15\)
Answer & Solution
Correct Answer
(A) \(25\)
Step-by-step Solution
Detailed explanation
A polygon of \(n\) sides has number of diagonals \(=\frac{n(n-3)}{2}=275 \quad\) (given)…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Maths
- If the amplitude of \(z-2-3 i\) is \(\frac{\pi}{4}\), then the locus of \(z=x+i y\) is :TS EAMCET 2003 Medium
- The solution of the equation \(2 \cosh 2 x+10 \sinh 2 x=5\) isTS EAMCET 2019 Medium
- If \(\sum_{r=0}^{20}{ }^{20+r} \mathrm{C}_r=\frac{p}{q}{ }^{40} \mathrm{C}_{20}\) and \(\mathrm{GCD}\) of \((p, q)=1\), then \(p^2-q^2=\)TS EAMCET 2023 Medium
- If the equation of the plane passing through the point \((2,-3,4)\) and perpendicular to both the planes \(2 x-3 y+5 z=2\) and \(x+y+2 z=3\) is \(x+p y+q z=r\), then \(r\) is equal toTS EAMCET 2021 Medium
- If \(M\) is the foot of the perpendicular drawn from the origin \(O\) on to the variable line \(L\), passing through a fixed point \((a, b)\), then the locus of the mid-point of \(O M\) isTS EAMCET 2020 Medium
- If \(\int \sec ^2 x \operatorname{cosec}^4 x d x=-\frac{1}{3} \cot ^3 x+k \tan x\) \(-2 \cot x+C\), then \(k\) is equal toTS EAMCET 2012 Medium
More PYQs from TS EAMCET
- The work done to assemble the three charges in a configuration as shown in the figure below is
TS EAMCET 2018 Medium - A parallel plate capacitor of capacity \(100 \mu \mathrm{F}\) is charged by a battery of 50 volts. The battery remains connected and if the plates of the capacitor are separated so that the distance between them becomes double the original distance, the additional energy given by the battery to the capacitor in joules isTS EAMCET 2002 Hard
- What is the approximate angular momentum (in \(\mathrm{J} \mathrm{s}\) ) of electron in hydrogen atom in its ground state? \[ \left(\mathrm{h}=6.625 \times 10^{-34} \mathrm{Js}\right) \]TS EAMCET 2023 Medium
- Consider the two following statements \(A\) and \(B\), and identify the correct choice given in the answers : (A) In photovoltaic cells the photoelectric current produced is not proportional to the intensity of incident light. (B) In gas filled photoemissive cells, the velocity of photoelectrons depends on the wavelength of the incident radiation.TS EAMCET 2003 Easy
- Match the following.
The correct match is (A) (B) (C) (D)TS EAMCET 2013 Easy - The following statements are given about hydrogen atom. A. The wavelengths of the spectral lines of Lyman series are greater than the wavelength of the second spectral line of Balmer series. B. The orbits correspond to circular standing waves in which the circumference of the orbit equals a whole number of wavelengths.TS EAMCET 2015 Easy