Question

Rio’s secret number is an even number. It is between 50 and 60. Its ones digit is the number of wheels on 2 bikes. What is Rio’s secret number?

• A. 54

Answer 1

The correct option is A 54
The number is between 50 and 60. Between that, all the numbers starts with 5. So, the tens digits is 5.

Number of wheels on 1 bike $=2$
So, number of wheels on 2 bikes $=2\times 2=4$
Thus, the ones digit is 4.

$\therefore$ The secret number is 54.