Practice Conjunction in Math

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

A conjunction P∧QP \wedge Q is a compound statement that is true if and only if both constituent statements PP and QQ are individually true.

To enter a theme park ride, you must be tall enough AND have a valid ticketβ€”both conditions must hold. If you are tall enough but lost your ticket, you cannot ride. A conjunction P∧QP \wedge Q works the same way: it is true only when every single part is true, and false the moment any part fails.

Showing a random 20 of 50 problems.

Example 1

easy
Evaluate: '3>23>2 AND 5>45>4'.

Example 2

medium
Translate to logic and evaluate: '16=4\sqrt{16}=4 and 00 is positive'.

Example 3

medium
Show P∧P≑PP \wedge P \equiv P (idempotence).

Example 4

challenge
Find all integers nn with 1≀n≀1001 \le n \le 100 satisfying 'nn is divisible by 33 AND nn is divisible by 55'.

Example 5

easy
If both PP and QQ are false, what is P∧QP \wedge Q?

Example 6

easy
How many rows of the truth table for P∧QP \wedge Q are TRUE?

Example 7

medium
For 'x2=4x^2=4 AND x>0x>0', find all real xx.

Example 8

challenge
Show 'P∧(Q∨R)P \wedge (Q \vee R)' equals '(P∧Q)∨(P∧R)(P\wedge Q)\vee(P\wedge R)' (distributivity).

Example 9

easy
Let pp: '44 is even' and qq: '4<104 < 10'. Evaluate p∧qp \land q, p∧¬qp \land \neg q, and ¬p∧q\neg p \land q.

Example 10

easy
What is the symbol for logical AND?

Example 11

medium
For what xx is 'x>0x>0 AND x<5x<5' true? Express as an interval.

Example 12

medium
Determine the truth value of: '2\sqrt{2} is irrational AND 2+2=42+2=4'.

Example 13

medium
Construct the full truth table for p∧qp \land q and use it to show that conjunction is commutative: p∧q≑q∧pp \land q \equiv q \land p.

Example 14

easy
Translate to symbols: 'It is raining AND it is cold.' Let RR = raining, CC = cold.

Example 15

medium
Evaluate 'P∧QP \wedge Q' where PP: '1010 is divisible by 55' and QQ: '1010 is divisible by 44'.

Example 16

easy
In everyday speech 'tall enough AND has a ticket', can you ride with only a ticket?

Example 17

easy
How many of the 4 truth-table rows make P∧QP\wedge Q true?

Example 18

easy
Evaluate: '44 is even AND 44 is prime'.

Example 19

easy
In set theory, which operation matches logical AND on predicates?

Example 20

easy
Determine the truth value of: (a) '3>23 > 2 and 3<53 < 5', (b) '3>23 > 2 and 3>53 > 5'.