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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,989

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 18,670

Hi bobbym,

The solution #1767 is perfect. Excellent!

#1768. Find the sum of the following series 1 + 2 + 3 + ........ + 45.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,989

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 18,670

Hi bobbym,

The solution #1768 is correct. Good work!

#1769. Find the sum of the following series : 16² + 17² + 18² + ......... + 25².

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,989

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 18,670

Hi bobbym,

The solution #1769 is correct. Marvelous!

#1770. Find the sum of the following series : 2 + 4 + 6 + 8 + ......... + 100.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,989

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 18,670

Hi bobbym,

The solution #1770 is perfect. Good work!

#1771. Find the sum of the following series : 7 + 14 + 21 + ........ + 490.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**anonimnystefy****Real Member**- From: Harlan's World
- Registered: 2011-05-23
- Posts: 15,954

Hi ganesh

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

The knowledge of some things as a function of age is a delta function.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,989

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 18,670

Hi anonimnystefy and bobbym,

The solution #1771 is correct. Excellent, anonimnystefy and bobbym!

#1772. Find the sum of the following series: 16³ + 17³ + 18³ + ....... + 35³.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,989

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 18,670

Hi bobbym,

The solution #1772 is correct. Marvelous!

#1773. Find the value of k if 1³ + 2³ + 3³ + ...... + k³ = 2025.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,989

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 18,670

Hi bobbym,

The solution #1773 is perfect. Excellent!

#1774. Find the sum of the following series : 5² + 7² + 9² + ..... + 39².

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,989

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 18,670

Hi bobbym,

The solution #1774 is correct. Excellent!

#1775. If 1 + 2 + 3 + ...... + p = 171 then find 1³ + 2³ + 3³ + ..... + p³.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,989

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 18,670

Hi bobbym,

The solution #1775 is correct. Brilliant!

#1776. If 1³ + 2³ + 3³ + .... + 8281, then find the value of 1 + 2 + 3 + ... + k.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,989

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 18,670

Hi bobbym,

The solution #1776 is perfect. Excellent!

#1777. Find the total area of 12 quares whose edges are 12 cm, 13 cm, 14 cm, .... and 23 cm.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,989

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 18,670

Hi bobbym,

The solution #1777 is perfect. Neat work!

#1778. Find the total volume of 15 cubes whose sides are 16 cm, 17 cm, 18 cm, .....30 cm.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 98,989

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **Thinking is cheating.**

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 18,670

Hi bobbym,

The solution #1778 is correct! Stupendous!

#1779. Find the 8[sup]th[/sup] term of the sequence 1, 1, 2, 3, 5, 8, ....

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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