Level 3
I am a 4-digit number. The digit in the hundreds place is 6 less than the ones place. The digit in the tens place is 3 more than the thousands place. Which of the following numbers am I?
5288, 2523, 5427
Level 3
Some adults were at a concert. After 664 women and 2755 men left the concert hall, there were 521 adults left. How many adults were there at the concert hall at first?