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Q: What is special about the numbers 4 and 9?
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What special name is given to numbers 4 and 9 and16?

They are SQUARE NUMBERS.


What is special about 4 and 9 and 25 and 49?

They are all perfect square numbers.


Why are 36 81 and 25 special numbers?

They are 'square' numbers. 6x6=36, 9x9=81 and 5x5=25. Some other square numbers are 64, 4, 9, 100 & 121


What is special about the following sequence 4 9 1 7 6 10?

For English speaking people, the numbers are in alphabetical order.


How can 9 be the sum of two consecutive numbers?

The numbers are 4 and 5: 4 + 5 = 9


What is special about the following numbers 8 5 4 9 1 7 6 10 3 2 0?

The numbers are in alphabetical order of their names in the English language.


Can you get a greatest common factor for negative numbers?

Sure. But since negative numbers have positive factors and positive numbers are greater than negative numbers, the answer will be the same regardless of the sign. The GCF of 4 and 9, -4 and 9, 4 and -9 and -4 and -9 is 1.


What is 9 more than -4?

13


What is numerical sequence?

It is any sequence of numbers. For example: 1 3 5 7 9 11 .... - this is the sequence of odd numbers. 1 4 65 4556 4 3 76 ... - this is probably not a special sequence at all.


How do you make 548 using these numbers 4 4 4 9 9 9?

499 + 49


What special number sequences are there?

8 5 4 9 1 7 6 10 3 2 0 This sequence is special because the numbers are in alphabetical order. The Fibonacci sequence is very special and the triangular sequence.


What two numbers have a sum of 4 and a difference of 9?

Two numbers with a sum of 4 and a difference of 9 are -6.5 and 2.5.