A method of adding even number sequence
I hope you have found a
way to add a even number sequence.
Did you find it? Isn't
it?
If not, let's find out.
When we add odd
numbers, we find the addition by squaring it by the number of numbers to be
added! We are going to use the same method to add even power numbers. Here
again the important thing is the number of even numbers we add, starting from
two.
Add the first five even
numbers?
2 + 4 + 6 + 8 + 10 = 30
We have added five even
numbers. Take these five. Also take six which is next to five. Multiply these
two numbers. Does 5 × 6 = 30 come up? This is the above number sequence
addition. Aha! The answer has arrived!
Any number of even
numbers you add from two and multiply the next number of that number will give
you the addition of even numbers sequence.
Let's look at one more
example. Add the first ten even numbers?
2 + 4 + 6 + 8 + 10 + 12
+ 14 + 16 + 18 + 20 = 110
As we add 10 numbers we
multiply 10 and its next number 11. 10 × 11 = 110. What is the answer?
Do you have to count
how many numbers you are taking when you take even numbers in a row? What if
something goes wrong while counting while taking a very large number of
numbers?
If such a thought comes
to you, let go of that worry. Now observe the first sequence. Does the final
even number come to 10 when the first five even numbers are taken? Divide this
10 by 2. Does it get 5? These 5 are the number of even numbers we have taken.
Now multiply this 5 and its next number 6 and you can find the answer.
Similarly, taking the
first 10 even numbers, the final even number is 20. Now divide 20 by two. Got
10? This 10 itself is the number of even numbers we have taken. Now multiply
this 10 and the next number 11 to get the answer to 110.
Similarly, you are
asking if there is any way to count the number in odd numbers sequence?
Why not do it? Add 1 to
the last odd number and divide that number by 2. Don't keep counting how many
odd numbers you get. This is easy to find. Please check if you want.
I hear you tell me to
test one yourself. Ok let's check.
Take the addition of
the odd number sequence 1 + 3 + 5 + 7 + 9 + 11 + 13 = 49. Here we have taken
total 7 odd numbers. Isn't the final number 13? Add 1 to 13. 14 coming up?
Divide this by two. 7 is coming. Yes total 7 odd numbers we have taken
sequentially starting from one.
I think you have now
developed a special interest in the Mathematics. Now the question you are
asking is ringing in my ears. You are asking whether it is possible to write
square numbers and cubic numbers in order and find their addition easily? Why
can't you find? We will see that tomorrow.
*****
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