Composite Numbers

What is this missing number 107 98 90 83 77 - 68 65?

## Answer

###### Wiki User

###### June 25, 2017 12:51PM

It is: 72

## Related Questions

###### Asked in Math and Arithmetic

### What number should replace the mark 61 68 82 92 103 107?

To solve a problem such as this, we must first determine the
pattern that has created the already existing list:
61 68 82 92 103 107
+7 +14 +10 +11 +4
If you look at the numbers that have obviously been added to get
the new number, it should be obvious (laying the problem out like
this) that those numbers are derived by adding the digits of the
previous number and then adding the sum of those digits to that
same number. For example:
61 = 6 + 1 = 7, therefore 61 + 7 = 68
68 = 6 + 8 = 14, therefore 68 + 14 = 82 and so on...
Thus, the answer would be 107 = 1 + 0 + 7 = 8, therefore 107 + 8 =
115

###### Asked in Math and Arithmetic

### What is the missing number in the sequence 68 56 50 40?

The answer depends on which number is missing.
The sequence could be:
96, 68, 56, 50, 40
68, 61, 56, 50, 40
68, 56, 522/3, 50, 40
68, 56, 50, 46, 40
68, 56, 50, 40, 16.
In fact, there are infinitely more possible answers. Given ANY
fifth number to add to the four in the question, it is always
possible to find a quartic (power 4) polynomial that will fit all
five numbers.

###### Asked in Math and Arithmetic

### What number is needed to complete this pattern 107 98 90 83 77 68 65?

Not sure about completing the pattern since there is no reason
for it to stop after the next number.
There is no polynomial solution for polynomials of order 5 of
lower. The simplest answer is obtained by fitting the following
polynomial of order 6:
U(n) = (4*n^6 - 155*n^5 + 1345*n^4 - 5825*n^3 + 13288*n^2 -
17060*n + 34080)/240 for n = 1, 2, 3, ...

###### Asked in Math and Arithmetic

### What is the mean mode and median of this data 64 80 64 70 76 79 67 72 65 73 68 65 67 65 70 62 67 68 65 64?

step 1. arrange the numbers in ascending order (from low to
high) as follows.
was: 64 80 64 70 76 79 67 72 65 73 68 65 67 65 70 62 67 68 65
64
now: 62 64 64 64 65 65 65 65 67 67 67 68 68 70 70 72 73 76 79
80
step 2. count the number of the numbers above, or assign an
index as follows.
string: 62 64 64 64 65 65 65 65 67 67 67 68 68 70 70 72 73 76 79
80
index: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
so the count is 20.
The mode is the number most frequently observed. The mode is 65,
which occurs four times.
The median is the number in the middle. In this case, the 10th
and 11th numbers both qualify for consideration. We take the
average of the two numbers. The median is therefore 67.
Alternate methods:
1) Use Microsoft Excel statistical functions of =mode() and
=median()
2) Draw a bar graph with the horizontal axis of integers from 62
to 80. The y-axis is the frequency observed for that specific x
value. For example, the frequency for 62 is one. The frequency for
63 is zero, and so on. The mode is the bar with the highest count.
The median is not so obvious from a bar graph, unless the
distribution is symmetric. Need some manual counting.