Mathematics

Grade5

Easy

Question

# Write the rule for the following pattern: 99, 88, 77, 66

- add 11
- subtract 11
- add 12
- subtract 12

Hint:

### In mathematics, a number pattern is a series of integers that occur in a specific order. Patterns often describe the inverse relationship between numbers. Patterns can also be used to describe numerical sequences. Here we have given a series of numbers that are 99, 88, 77, 66, we have to find the rule applied to this pattern.

So here first we will try to find what number is added or subtracted and then will apply it on all numbers.

## The correct answer is: subtract 11

### So as we know that a pattern or sequence in a series of numbers is called a number pattern. Generally, this pattern builds a connection between all integers.

Some numerological pattern types are:

There are two typical patterns for number sequences:

- Arithmetic Sequences
- Geometric Sequences

The following are some examples of Number Patterns' unique sequences:

- Square Numbers
- Cubic Sequence
- Triangular Numbers
- Fibonacci Numbers

We have been given 99, 88, 77, 66. Now looking at this pattern we can identify that the number is subtracted from each and hence the order is descending.

This pattern follows subtracting 11 from the previous term, which is:

99 – 11 = 88

88 – 11 = 77

88 – 11 = 66

66 – 11 = 55

So the rule for the given pattern is subtract 11.

Here we were given a number series and we were supposed to find what number is added or subtracted to continue the series. There are numerous different sorts of number patterns. They could be a series of even or odd numbers, multiples of a specific number, ascending or descending, etc. Here the rule of the pattern was to subtract 11.