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Logarithms PYQ | JEE Main 2025 | Solve Without Calculator

❓ Question Let m = log ⁡ 245 175 , n = log ⁡ 1215 875. m=\log_{245}175,\qquad n=\log_{1215}875. Find the value of m − n 1 − m n . \frac{m-n}{1-m…

JEE Main Exponential Equation Trick | Solve in Under 2 Minutes

❓ Question Find the unique value of x x  satisfying 4 x − 3 x + 1 2 = 3 x + 1 2 − 2   2 x − 1 . 4^x-3^{x+\frac12}=3^{x+\frac12}-2^{\,2x-1}. ✍️ S…

Matrix Algebra PYQ | JEE Main 2025 | Number of Matrices Question

❓ Question Let A = ( a b 0 d ) , a , b , d ∈ { − 1 , 0 , 1 } A=\begin{pmatrix} a & b\\ 0 & d \end{pmatrix}, \qquad a,b,d\in\{-1,0,1\} and…

JEE Main Relations Question | Symmetric or Transitive? PYQ

❓ Question Let A = { 0 , 1 , 2 , 3 , 4 , 5 } A=\{0,1,2,3,4,5\} and let R R  be a relation on A A  defined by ( x , y ) ∈ R    ⟺    max ⁡ ( x , y…

15% H₂SO₄ Solution | Molarity and Molality Trick | JEE Main PYQ

❓ Question A 15% (w/w) H₂SO₄ solution has a density of 1.020 g cm⁻³ . Find: Molarity (M) Molality (m) (Given: Molar mass of H₂SO₄ = 98 …

Limiting Reagent and Excess Reagent JEE Chemistry

❓ Question Magnesium reacts with sulphur to form magnesium sulphide. Mg + S → MgS \boxed{\text{Mg} + \text{S} \rightarrow \text{MgS}} Given: Ato…