The problem of counting the number of people in a family challenges all 4 Olympia contestants

The seemingly simple problem of counting the number of people in a family proved difficult for the four contestants of Road to Olympia, partly due to time pressure in the program.

The online community is discussing the problem that was broadcast in the Finish Line competition of mountain climber Kien Giang. The specific question is as follows: "Parents have 6 sons, each son has 1 sister. How many people are there in the family?".

Immediately after that, contestant Kien Giang quickly gave the answer. However, the answer was incorrect, and then the answer was given to the remaining 3 contestants, and no one rang the bell.

The problem of counting the number of people in a family challenged all 4 Olympia contestants.

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

Lam Hoang

Source: https://vtcnews.vn/bai-toan-dem-so-nguoi-trong-gia-dinh-thach-thuc-ca-4-thi-sinh-olympia-ar935394.html