Challenge: How old is Bobby?

This is a two-question challenge. In the first question, users provide their age. The second question is a simple cognitive test.

Question 2
Bobby and Adam are twins. Last weekend, Adam celebrated is 21st birthday. How old is Bobby today?

Correct answer. Since Adam and Bobby are twins, they share the birthday. This means that Bobby, as Adam, is 21 year-old. 

Sample and data
The following results are based on data collected from May 1, 2021 to June 1, 2021. 

Data from users who did not provide answers to all questions has been removed. We also removed data from anyone who reported their age as less then 18. The final sample consists of 154 people from 33 countries.

Table 1 depicts the distribution of countries (top 5). Table 2 depicts distribution of age.

Table 1: Geographic Distribution of Sample

Table 2: Age Distribution of Sample

Main results

85% of users provided the correct answer. [We can provide the distribution of answers.]