How many odd numbers are there in the sequence which are immediately followed by an odd number

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What are the set of odd numbers on a die?

Question

A

1, 2, 3, 4, 5, and 6

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B

1 and 5

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C

1, 3, and 5

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D

1 and 3

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Solution

The correct option is D1, 3, and 5Numbers from 1 to 6 are present on 6 faces of the die. So, the odd numbers that appear on a die are 1, 3, and 5.

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How many odd numbers are there In the sequence each of which is Immediately followed by an odd number?


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Odd numbers are numbers that cannot be arranged in pairs. In other words, all numbers except the multiples of 2 are odd numbers. Let us learn more about odd numbers in this article.

What are Odd Numbers?

Odd numbers are those numbers that cannot be divided into two parts equally. In other words, odd numbers are positive integers that cannot be categorized into groups of two. For example: 1, 3, 5, 7, etc. Let us visualize it using an example of footwear and cherries. Let us assume that we have footwear in counts of 1, 3, 5, and 7. On the other hand, we have cherries in pairs of 2, 4, 6, and 8. Observe the figure given below in order to understand how the pairing of these numbers works.

How many odd numbers are there in the sequence which are immediately followed by an odd number

It is to be noted here that the footwear, when odd in number, does not form a pair entirely. One among all remains unpaired. On the contrary, cherries which show even numbers are those numbers that can be divided into two parts equally. For example, 4 cherries can be divided into 2 pairs of 2, 8 cherries can be divided into 4 pairs of 2, and so on.

List of Odd Numbers

Let us have a look at the list of all the odd numbers from 1 to 200 and try to apply the knowledge we have learned here so far. Note that none of the numbers given here are multiples of 2. It should also be noted that out of the first 200 numbers, only 100 numbers are odd numbers. Have a look at the list of the odd numbers from 1 to 200 given here.

1 3 5 7 9 11 13 15 17 19
21 23 25 27 29 31 33 35 37 39
41 43 45 47 49 51 53 55 57 59
61 63 65 67 69 71 73 75 77 79
81 83 85 87 89 91 93 95 97 99
101 103 105 107 109 111 113 115 117 119
121 123 125 127 129 131 133 135 137 139
141 143 145 147 149 151 153 155 157 159
161 163 165 167 169 171 173 175 177 179
181 183 185 187 189 191 193 195 197 199

The definition that we have learned above is applied in this table and it eases our work, doesn't it? Observe the given table and try to notice some similarities between all these numbers given above.

  • Did you notice a pattern in the above odd numbers list?
  • In the odd numbers list, the digit at the ones place always remains 1, 3, 5, 7, or 9.

Properties of Odd Numbers

The following points list the properties of odd numbers. Each of these properties can be explained in a detailed way as given below.

  • Addition of Odd Numbers: The addition of two odd numbers always gives an even number, i.e., the sum of two odd numbers is always an even number. For example, 3 (odd) + 5 (odd) = 8 (even).
  • Subtraction of Odd Numbers: Subtraction of two odd numbers always results in an even number. For example, 7 (odd) - 1 (odd) = 6 (even).
  • Multiplication of Odd Numbers: Multiplication of two odd numbers always gives an odd number. For example, 3 (odd) × 7 (odd) = 21 (odd).
  • Division Of Odd Numbers: Division of two odd numbers always gives an odd number. For example, 33 (odd) ÷ 11 (odd) = 3 (odd).

Let us summarize our learning of properties of odd numbers using the table given below.

Arithmetic Operation Result
Odd number + Odd number Even number
Odd number - Odd number Even number
Odd number × Odd number Odd number
Odd number ÷ Odd number Odd number

Types of Odd Numbers

Odd numbers are a list of all the numbers that are not the multiples of 2. So this seems like a vast set of numbers. So we can have many types of odd numbers starting from whether the odd numbers have factors or not, what is the difference between two odd numbers, what is their position on the number line, etc.

Consecutive Odd Numbers

Consecutive odd numbers are those odd numbers that are listed in sequence of their order. For example, if n is an odd number, then the numbers n and n + 2 are grouped under the category of consecutive odd numbers. They always have a difference of 2 between them and are consecutive in nature, hence the name consecutive odd numbers. For example 3 and 5, 11 and 13, 25 and 27, 37 and 39, 49 and 51, and so on.

Composite Odd Numbers

Composite odd numbers are those odd numbers that are not prime numbers.These types of odd numbers are formed by the product of two smaller positive odd integers. The composite odd numbers from 1 to 100 are 9, 15, 21, 25, 27, 33, 35, 39, 45, 49, 51, 55, 57, 63, 65, 69, 75, 77, 81, 85, 87, 91, 93, 95, and 99.

Smallest Odd Number

The smallest odd number is 1 because odd numbers start from 1 and are listed as, 1, 3, 5, 7, 9, 11 and so on.

First ten Odd Numbers

The first ten odd numbers are 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19.

Smallest Odd Composite Number

The smallest odd composite number is 9. If we start looking at the smallest composite number it is 4, but that is an even number. The next composite number is 6 which is again an even number. The same goes for the next composite number which is 8. Now, the next composite number is 9 which is an odd number. So, this brings us to the smallest odd composite number which is 9.

Tips and Tricks on Odd Numbers

Given below is a list of a few tips and tricks on odd numbers. These will help you in remembering the concepts faster.

  • The sum of two odd numbers is always an even number.
  • An easy method to differentiate whether a number is odd or even is to divide it by 2.
  • If the number is not divisible by 2 completely, it will leave a remainder of 1, which indicates that the number is an odd number and cannot be divided into 2 parts evenly.
  • If the number is divisible by 2 completely, it will leave a remainder 0, which indicates that it is an even number and it can be divided into 2 parts evenly.
  • Odd numbers always have 1, 3, 5, 7, or 9 in their units place. Even numbers always have 0, 2, 4, 6, or 8 in their units place.

☛ Related Articles

  • Even Numbers
  • Real Numbers
  • Natural Numbers
  • Whole Numbers
  • Rational Numbers
  • Irrational Numbers
  • Counting Numbers
  • Cardinal Numbers
  • Odd Numbers 1 to 1000
  • Sum of Odd Numbers
  • Even and Odd Numbers Worksheets

FAQs on Odd Numbers

What are Odd Numbers in Math?

In math, odd numbers are those numbers that are not the multiples of 2. For example, 3, 5, 7, 9, and so on. Odd numbers cannot be arranged in pairs which means that they cannot be divided into two parts equally.

What are the Odd Numbers From 1 to 100?

The list of odd numbers from 1 to 100 is: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99.

What is the Difference Between an Odd Number and an Even Number?

The numbers which can be divided into two parts evenly are called even numbers. For example, 4, 8, 82, and so on are even numbers. Whereas odd numbers cannot be divided into equal pairs and are not divisible by 2. For example, 7, 91, 63, and so on are odd numbers.

What are Consecutive Odd Numbers?

Two consecutive odd numbers are those numbers that are odd and have a difference of 2 between them. For example 3 and 5, 11 and 13, etc.

Is 0 an Even or Odd Number?

0 is an even number because it is attached with the multiples of 2. For example, 10, 20, 30 40, and so on. Therefore, it is not an odd number.

What is the Mean of the First Five Odd Numbers?

In order to find the mean of the first five odd numbers we need to follow the steps listed below:

  • Step 1: List the first five odd numbers, they are 1, 3, 5, 7, and 9.
  • Step 2: Calculate the sum → 1 + 3 + 5 + 7 + 9 = 25.
  • Step 3: Apply the mean formula = Mean of any n numbers = (Sum of n numbers) ÷ n = 25/5 = 5.

Therefore, the mean of the first five odd numbers is 5.

How Many Odd Numbers are there Between 36 and 53?

The list of odd numbers that lie between 36 and 53 are 37, 39, 41, 43, 45, 47, 49, and 51. Hence, there are a total of 8 odd numbers between 36 and 53.

Is Number 1 Odd or Even?

1 is an odd number because odd numbers are not divisible by 2 completely. For example, 3, 5, and 7 are a few odd numbers that cannot be divided equally into groups of 2..

Which Odd Number Comes After 499?

The odd number that comes after 499 is 501. The number that comes after 499 is 500 which is an even number. So, 501 is the next odd number after 499.

What is the Odd Numbers Formula?

The odd numbers formula is expressed as 2n ± 1, where, n ∈W (whole numbers). We know that an odd number is always expressed as 1 less or more than an even number. An even number is expressed as 2n, where n is a whole number. Therefore, the formula for odd numbers is expressed as, Formula for odd numbers = 2n ± 1

What is the HCF of Two Consecutive Odd Numbers?

The Highest Common Factor (HCF) of any two consecutive odd numbers is always 1. For example, the HCF of 13 and 15 is 1.

What are Even and Odd Numbers?

All whole numbers can be categorized into two parts: even and odd numbers. Even numbers are the ones whose units place digit is either 0, 2, 4, 6, or 8, and odd numbers are ones whose units place digit is either 1, 3, 5, 7, or 9. Examples of even numbers are 2, 4, 6, 8, 10, 12, 14, 16, etc, and the examples of odd numbers are 1, 3, 5, 7, 9, 11, 13, 15, 17, etc.

What is the Smallest Odd Number?

1 is the smallest odd number because the list of odd numbers starts from 1, 3, 5, 7 and so on.

How many odd numbers are there in the sequence which are immediately followed by an odd number series 51473985726315863852243496?

Answer: there are 14 odd no.

How many odd numbers are there in the following sequence of numbers which are immediately?

There are 7 odd numbers which are immediately preceded by an odd number and immediately followed by an even number.

How many even numbers are there in the sequence which are immediately preceded by an odd number?

From the given sequence, it can be observed that there are 3 such combinations where an even number is immediately preceded by an odd number and immediately followed by an even number as shown below.

How many odd numbers are there in the series which an immediately followed by Perfect Square digit?

Hence, '2' is the correct answer.