<apex:page controller="M_R_Another">
<apex:form >
<apex:pageBlock title="Recently Modified">
<apex:commandButton value="Click Me" action="{!RM}"/>
</apex:pageBlock>
</apex:form>
</apex:page>

public class M_R_Another {

    public PageReference RM() {
        PageReference pageRef = new PageReference('https://93com4-dev-ed--c.visualforce.com/apex/M_R_Another2?mrp='+RM);
        return pageRef;
    }

}

<apex:page controller="M_R_Another2">
<apex:form >
<apex:pageBlock >
<apex:pageBlockTable value="{!n}" var="g">
                <apex:column value="{!g.Name}"/>
                <apex:column value="{!g.LastModifiedDate}"/>
                <apex:column value="{!g.Student_Id__c}"/>
</apex:pageBlockTable>
</apex:pageBlock>
</apex:form>
</apex:page>

public class M_R_Another2 {

    public list<Student__c> n { get; set; }
    
    public M_R_Another2(){
        string m = ApexPages.currentPage().getParameters().get('mrp');
        n = [SELECT Student_Id__c,Name, LastModifiedDate FROM Student__c  ORDER BY LastModifiedDate DESC];
    }
}

<apex:page controller="ChooseGender">
<apex:form >
    <apex:selectList id="ChooseGender" value="{!CG}" size="1">
            <apex:selectOption itemValue="Male" itemLabel="Male"/>
            <apex:selectOption itemValue="Female" itemLabel="Female"/>
            <apex:selectOption itemValue="Others" itemLabel="Others"/>
        </apex:selectList> 
<apex:commandButton value="Click me" action="{!PSO}"/>
</apex:form>
</apex:page>

<apex:page controller="Created_Recently">
    <apex:form >
        <apex:pageblock title="Recently Modified student">
          
            <apex:pageBlockTable value="{!stu}" var="c">
                <apex:column value="{!c.Name}"/>
                <apex:column value="{!c.LastModifiedDate}"/>
                <apex:column value="{!c.Student_Id__c}"/>
            </apex:pageBlockTable>
        </apex:pageblock>        
    </apex:form>
</apex:page>

public class Created_Recently {
    
    public List<Student__c> stu {get;set;}
 
    public Created_Recently(){
        DateTime dt = System.Now().addHours(-1);
        stu = [SELECT Student_Id__c,Name, LastModifiedDate FROM Student__c where LastModifiedDate=:dt ORDER BY LastModifiedDate DESC LIMIT 1];
        system.debug('stu'+stu);
        
    }
}

If user enter min age, max age . fetch all the students in between that min and max age

• in above example try to load students in ascending order based on age

Date myOldDate = Date.newInstance(2021, 1, 1);
Date myTodayDate = date.today();
List<Student__c>studentList = new List <Student__c>();
studentList = [SELECT Student_Id__c, Name, Joining_Date__c FROM Student__c
              WHERE Joining_Date__c >: myOldDate AND Joining_Date__c :<= myTodayDate];

If user enter min age, max age . fetch all the students in between that min and max age

• in above example try to load students in ascending order based on age