Number Thinking (1)( Week 18 Practice) 1. A prime number is a whole number that can only be divided by itself and one. What is the biggest prime number that is less than 155? 2. The product of two whole numbers is 125 and their quotient is 5. What is the smaller number? 3. Some toys are distributed to children. If each child is given 5 toys, 3 toys are left. If each child is given 6 toys, 8 more toys are needed. How many children are there? 4. A 12-hour digital clock shows time in digits with accuracy to seconds. What is the largest possible product of its non-zero digits? 5. 1, 500, 3, 500, 5, 500, 7, 500, 9, 500, 11, 500, ...
In the sequence above, all even-numbered terms beginning with the 2nd term are 500. The odd-numbered terms are the consecutive positive odd integers. What is the difference between the 200th term and 199th term? |