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Wk11

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									                    SPECIAL SERIES
          Instructions: Apply suitable logic for solving the following.


1. Find the sum of first 75 natural numbers.

2. Find the sum of 5 + 10 +15 + ... + 250.

3. Find the sum of 15 + 16 + ... + 80.

4. Find 5 + 7 + 9 + ... + 99, using the formula

5. Evaluate: 1 + 4 + 9 + ... + 1600.

6. Find

7. Find

8. Evaluate                                  where k = 50




                                                                          Math-Drills.com
                 SPECIAL SERIES
       Instructions: Apply suitable logic for solving the following.

1. Find the sum of first 75 natural numbers.




           The Sum of n natural number is given by




2. Find the sum of 5 + 10 +15 + ... + 250.




3. Find the sum of 15 + 16 + ... + 80.




4. Find 5 + 7 + 9 + ... + 99, using the formula




                                                                  Math-Drills.com
5. Evaluate: 1 + 4 + 9 + ... + 1600.




6. Find




7. Find



           Given that



8. Evaluate                            where k = 50
   Given that




                                                      Math-Drills.com

								
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