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### Theory

 1 Introduction to special series 2 Sum of first 'n' natural numbers 3 Sum of first 'n' odd natural numbers 4 Sum of squares of first 'n' natural numbers 5 Sum of cubes of first 'n' natural numbers

### Textbook Questions

 1 Find the sum of the numbers Difficulty: easy 1 2 Calculate the sum of the given series Difficulty: medium 4 3 Sum of cube of natural numbers up to 'k' terms Difficulty: medium 4 4 Find the value of the given expression Difficulty: medium 4 5 Calculate the number of terms needed to get the sum Difficulty: hard 5 6 Determine the value of 'n' Difficulty: hard 5 7 Find the sum of the series Difficulty: hard 5

### Practice Questions

 1 Determine the sum of the numbers Difficulty: easy 2 2 Determine the sum of the numbers Difficulty: easy 2 3 Calculate the value of the expression Difficulty: medium 4 4 Sum of the natural numbers Difficulty: medium 4 5 Find the sum of the square of natural numbers Difficulty: medium 4 6 Find the value of 'n' Difficulty: medium 4 7 Sum of cube of natural numbers up to 'p' terms Difficulty: medium 4 8 Find the average of the first 'n' natural numbers Difficulty: medium 4 9 Evaluate the number of terms needed to get the sum Difficulty: hard 5 10 Find the amount of savings Difficulty: hard 5 11 Determine the value of 'k' Difficulty: hard 5 12 Determine the area can be decorated Difficulty: hard 5

### Key Questions for School Exam Preparation

 1 Obtain the sum of the series Difficulty: easy 1 2 Calculate the average of the given numbers Difficulty: medium 4 3 Find the sum of the numbers up to 'k' terms Difficulty: medium 4 4 Find the area can be decorated Difficulty: hard 5

### Teacher manual

 1 Methodical recommendation