Level 3
There is a 4-digit number. The digit in the hundreds place is thrice the digit in the ones place. The digit in the thousands place is the smallest even number. The sum of all the digits is 21. What is the number?
Level 3
I am a 5 digit number.
All my digits are odd.
The sum of the 5 digits is 25.
The digits in the ten thousands place and ones place make 10.
The ones digit is 4 more than the ten thousands digit.
The digits in the hundreds place and tens place make 10 too.
The tens digit is 4 more than the thousands digit.
If none of the digits is repeated, what is the 5 digit number?
Level 3
I am a number.
I have the digit 6 which is in the thousands place.
I also have the digit 8 which has a value of 80.
My digit in the ones place is 1 more than my digit in the tens place.
The value of my digit in the hundreds place is 620 more than the value of my digit in the tens place.
My digit in the ten thousands place is 2 less than my digit in the thousands place.
What number am I?
Level 3
A tank containing some water and 7 identical stones has a mass of 1 kg 235 g. When the 7 stones were taken out, the mass of the tank of water became 759 g. Find the mass of each stone.
(Give the answer in grams.)
