Revision

AI Flashcard Generator

AI Quiz Generator

More

Login

Sign Up

Login

Sign Up

Revision

GCSE A-Level AS Past Papers

AI Flashcard Generator AI Quiz Generator AI Notes Generator AI Video Summarizer

Exam Questions Video Tutorials Past Papers

Topics

Proof by Deduction & Exhaustion Proof by Contradiction

Indices & Surds Quadratics Simultaneous Equations Inequalities Polynomials Graphs & Transformations Modelling with Functions Modulus Functions Composite & Inverse Functions Rational Expressions & Partial Fractions Combined Graph Transformations Further Modelling with Functions

Straight Lines Circles Parametric Equations & Modelling

Binomial Expansion Arithmetic Sequences & Series Geometric Sequences & Series Sigma Notation Sequences & Recurrence Relations Modelling with Sequences & Series Further Binomial Expansion

Trigonometric Ratios & Rules Trigonometric Graphs Trigonometric Identities & Equations Radians & Approximations Reciprocal & Inverse Functions Compound & Double Angles Advanced Equations & Proof Trigonometric Modelling

Exponential Equations Laws of Logarithms Modelling with Exponentials & Logs

Differentiation Differentiation from First Principles Tangents & Normals Stationary Points Trigonometric Differentiation Product, Quotient & Chain Rules Implicit & Parametric Differentiation Rates of Change

Integration Definite Integration Areas Under & Between Curves Integration by Substitution & Parts Integration Using Partial Fractions Parametric Integration Differential Equations & Modelling

Locating Roots Iteration & Newton-Raphson Trapezium Rule Numerical Methods in Context

Two-Dimensional Vectors Three-Dimensional Vectors

A-Level OCR MathsExam QuestionsProof

Proof by Deduction & Exhaustion

Question 1

2 marks

Let $n$ be an integer.

Prove that

$n(n+1)$

is even.

Look at the two consecutive integers $n$ and $n+1$ . What must be true about the parity of at least one of them?

Progress

Questions

0%

Easy0%

Medium0%

Hard0%