693 prompts matching "Why a conditional and its contrapositive are equivalent"
Showing only prompts that state their year. 35 more in this subject don't name one, so choose All years to see them.
Adding surds that need simplifying first
I am in SS 1. Give me a Cambridge IGCSE Additional Mathematics style exam question on addi
Estimating the value of a surd
I am in SS 1. I'm going to explain estimating the approximate value of a surd such as root
Surds in the quadratic formula
I am in SS 1. Quiz me with 5 short Additional Maths questions on why the quadratic formula
Dividing surds using the quotient rule
I am in SS 1. I'm going to explain simplifying a quotient of surds using the rule root a d
Simplifying nested surds
I am in SS 1. I'm going to explain simplifying an expression containing a surd within a su
Rationalising a denominator with three surd terms
I am in SS 1. I'm going to explain rationalising a more unusual denominator involving more
Simplifying a surd expression before squaring
I am in SS 1. I attempted an Additional Maths question on why it matters to simplify a sur
Finding a missing intersection from set sizes
I am in SS 1. Give me a Cambridge IGCSE Additional Mathematics style exam question on find
Set-builder notation basics
I am in SS 1. I'm going to explain reading and writing sets using set-builder notation, su
Subsets of a given set
I am in SS 1. Give me a Cambridge IGCSE Additional Mathematics style exam question on list
Working backwards from Venn diagram totals
I am in SS 1. I'm going to explain a Venn diagram question where I am given some regions a
Number of elements in a set from a Venn diagram region count
I am in SS 1. I'm going to explain counting n(A only), n(B only) and n(A and B) separately
A three-region overlap problem with unknowns
I am in SS 1. Quiz me with 4 short Additional Maths questions on a Venn diagram word probl
Logical reasoning puzzle solved using sets
I am in SS 1. I'm going to explain a short logical reasoning puzzle about groups of people
Finding the nth term of an arithmetic sequence
I am in SS 1. I'm going to explain finding the nth term formula of an arithmetic sequence,
Finding the common difference from given terms
I am in SS 1. Give me a Cambridge IGCSE Additional Mathematics style exam question on find
Finding the number of terms in an arithmetic series
I am in SS 1. Show me a fully worked Cambridge/Additional Maths style solution to a questi
Finding the common ratio from given terms
I am in SS 1. Give me a Cambridge IGCSE Additional Mathematics style exam question on find
Sum of the first n terms of a geometric series
I am in SS 1. I'm going to explain using the formula Sn = a(r^n - 1)/(r - 1) to find the s
Finding a term given the sum of a series
I am in SS 1. I'm going to explain finding a specific term of a sequence by first finding