How to use a two-dimensional array to pick up the values of radioButtons?

Question

I’m developing a quiz game in Android Studio with 10 activities. For each question I have only two alternatives where there would be 1 for the chosen alternative and 0 for not chosen. I would like to put these values in a two-dimensional array. How I would implement this in my code to then count these responses and set a profile for the person?

package com.example.bruno.limites;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;

public class Pergunta01 extends AppCompatActivity {

    private RadioGroup rdgOpcoes;
    private Intent it;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.pergunta01);

        rdgOpcoes = (RadioGroup) findViewById(R.id.rdgOpcoes);
        it = getIntent();

    }

    public void responder (View botao){

        RadioButton rbotao = (RadioButton) findViewById(rdgOpcoes.getCheckedRadioButtonId());
        String resposta = rbotao.getText().toString();

        it.setClass(this, Pergunta02.class);
        int respondidas = 0;

        if(respondidas > 0){
            respondidas++;
            Toast.makeText(this, " Questao respondida ", Toast.LENGTH_LONG ).show();
        }

        it.putExtra("respondidas" , respondidas);
        startActivity(it);
        finish();

    }
}