Level 2
Priscilla has more than 20 pencils but fewer than 40 pencils The pencils can be packed into bags of 4 pencils without any remainder. The pencils can also be packed into bags of 6 pencils without any remainder. What is the most number of pencils that Priscilla has?
Level 2
A 2-digit number less than 37 gives a remainder of 6 when divided by 10. It gives a remainder of 4 when divided by 8. List the possible number(s) in ascending order.
Level 3
In an office tower of 600 workers, 35% of the staff is the same as 70% of the number of visitors. How many less visitors than staff are there in the office tower?
