Number Sequences( Week 32 Evaluation) 1. Consecutive numbers are whole numbers that follow in order such as 2, 3, 4, 5 and 6. There are seven consecutive numbers whose sum is 392. What is the smallest number among the consecutive numbers? 2. Consecutive numbers are whole numbers that follow in order such as 2, 3, 4, 5 and 6. There are eight consecutive numbers whose sum is 68. What is the largest number among the consecutive numbers? 3. 6 consecutive whole numbers add up to 51. What is the smallest number among the 6 numbers? 4. What is the 16th term of the following sequence? 29, 21, 13, 5, -3, -11, -19, -27, ... 5. The numbers 2, 4, 6, and 8 are a set of four consecutive even numbers. Suppose the sum of 7 consecutive even numbers is 210. What is the smallest number among these 7 numbers? 6. In the following sequence of numbers, 6, 66, 666, 6666, .... What is the tens digit of the sum of the first 38 numbers of the sequence? 7. What is the 110th term in the following sequence? 0.7, 1.4, 2.1, 2.8, 3.5, 4.2, ... 8. 8n is n 8s multiplied together. What is the end digit of 8152? 9. Suppose the sum of 14 consecutive odd numbers is 420. What is the largest number among these 14 odd numbers? 10. In an arithmetic sequence, the next number in the sequence is obtained by adding a fixed number (step) to the current number. For example, a natural number sequence 1, 2, 3, ..., 10, 11, ... starts with 1 and has a step of 1. Now there is a new arithmetic sequence. Its 7th number in the sequence is 26 and its 15th number is 50. What is the 1st number in the sequence? |