Level 3
An even 5-digit whole number is made up of different digits. The digit in the ten thousands place is the smallest even number. It is 5 less than the tens digit. The thousands digit is twice of the hundreds digit. The hundreds digit is 4 less than the tens digit. What is the smallest possible 5-digit whole number?
Level 3
If you round me off to the nearest thousand, you will get 7000. If you round me off to the nearest hundred, you will get 7100. The sum of all my digits is 16. What is my largest possible value?
Level 2
Both number X and number Y when rounded off to the nearest hundred are 1200 and 5500 respectively. What is the smallest possible total for X and Y?
Level 3 Forty-four pupils sat for an essay-writing examination. Twenty-eight of them answered Question 1. Twenty-five of them answered Question 2. Sixteen of them answered both Question 1 and Question 2. How many pupils did not answer either or both Question 1 and Question 2?
