In 15 seconds, can you find the digit hidden behind the question mark?

If you can find the hidden digit behind the question mark in just 15 short seconds, your IQ is definitely not ordinary.

The math riddle is as follows:

The image contains six equal squares, and each square contains a four-digit number.

• Box 1: 7122
• Box 2: 6521
• Box 3: 8332
• Box number 4: 4743
• Box number 5: 9911
• Box 6: 387?

Your task is to find the digit hidden behind the question mark in box number 6. Stay calm, calculate carefully, and find the pattern in each box.

You have 15 seconds to find the digit hidden behind the question mark.

If you find the answer in the shortest time, scroll down to the comments to record it and see how many people think the same way as you.

Lam Hoang

Source: https://vtcnews.vn/trong-15-giay-do-ban-tim-ra-chu-so-an-sau-dau-hoi-cham-ar949268.html