Error Unity.2019.2.13f1? Randomizer?

Question

Unity

I can't figure it out, here are the problems with the unit
Assets\Scripts\LuckyGame.cs(36,16): error CS0104: 'Random' is an ambiguous reference between 'UnityEngine.Random' and 'System.Random'
And the code is here

using System.Collections;
using System.Collections.Generic;
using UnityEngine.UI;
using UnityEngine;
using System;
using UnityEngine.Monetization;
using UnityEngine.SceneManagement;

public class LuckyGame : MonoBehaviour
{
    public int price;

    private int Rate;

    public Text priceText;
    public Text rateText;


   public void StartGame()
   {
        if(Main.money > Rate)
        {
            StartCoroutine(LuckGame());
        }
    }

    void Update()
    {
        priceText.text = price + "";

        rateText.text = Rate + "";
    }

    IEnumerator LuckGame()
    {
       price = Random.Range(0, 11);
        Main.money += price;
        yield return new WaitForSeconds(0.5f);
        price = 0;
    }

    public void RatePlus()
    {
        Rate += 1;
    }

    public void RateMinus()
    {
        Rate -= 1;
    }

 
}

Answer 1

It's time to learn seasharp and learn to read errors, and not mindlessly copy-paste the code.
There are two Random classes. One is in UnityEngine, the second is in System. You need to specify EXACTLY which one to use. Either using, or add a namespace right at the place of use.
Sobsno the error also speaks about it.