## How many positive integers less or equal 100 are not multiples of 2 or 3 or 5?

50+33+20−16−6−10+3=74 positive integers less than or equal to 100 that are divisible by at least one of 2 3 and 5 and therefore 100−74=**26** that aren’t divisible by 2 3 or 5.

## How many positive integers not exceeding 100 and are divisible by neither 2 nor 5?

Hence **42** is the answer.

## How many integers from 1 to 100 are multiples of 2 or 3 but not both?

Step-by-step explanation:

There are 50 multiples of 2 between 1 and 100 (including 100) because 100 divided by 2 is 50. There are **33** multiples of 3 between 1 and 100 because 100 divided by 3 has a quotient 33 and a remainder 1. We know that 2 x 3 = 6. Hence all multiples of 6 are the common multiples.

## How many positive integers less than 20 are divisible by either 2 or 3?

(b) How many positive integers not bigger than 20 are divisible by either 2 or 3? Solution: There are ⌊20/2⌋ = 10 that are divisible by 2 and ⌊20/3⌋ = 6 that are divisible by 3. But there are also ⌊20/6⌋ = 3 that are divisible by both 2 and 3 so the total is 10 + 6 − 3 = **13**.

## How many positive integers not exceeding 100 and are divisible by neither 6 nor 9?

There are **22 positive integers** that are less than 100 and are divisible by 6 or 9.

## How many positive integers not exceeding 100 that are not divisible by 5?

**68 numbers**not exceeding 100 that are not divisible by 5 or by 7. 5) There are 345 students at a college who have taken a course in calculus 210 who have taken a course in discrete mathematics and 170 who have taken courses in both subjects.

## How many positive integers not exceeding 100 that are perfect squares?

**55**.

## How many 4 digit positive integers are there in which?

The second third and fourth digit can include zero so there are 10 possible values ranging from 0 to 9 for each of those positions. The first 999 numbers are only three or fewer digits long 9999 is the last four digit number. Hence **9000** is the number of up-to-4 digit numbers minus the three-or-fewer digit numbers.

## What are the positive integers less than 10?

There are **9** positive integers less than 10 which are 1 2 3 4 5 6 7 8 and 9. In the other way it can be represented as 0

## How many numbers between 1 and 100 are not divisible by 2 or 3 or 5?

Numbers not divisible by 2 3 & 5 = 100 – 74 = **26**.

## How many number of two digit positive integer than 100 which are not divisible by 2 3 and 5 is?

The correct option is: b.

So there are total **90 integers**.

## What are positive integers less than 20?

All the natural (non-negative/positive integers) that are less than 20 are: **1 3 5 7 9 11 13 15 17 19**. { 2 4 6 8 10 12 14 16 18} are set of positive even numbers less than 20.

## What are the positive integers less than 15?

They are **1 5 7 and 11**. There are 8 positive integers less than 15 and co- prime with 15. They are 1 2 4 7 8 11 13 and 14.

## Is 0 a positive integer?

It’s hard to fit zero into any one set of integers because it’s **the only integer that is neither a positive number nor a negative number**. … Zero can be classified as a whole number natural number real number and non-negative integer.

## How many positive integers not exceeding 1000 that are perfect squares or perfect cubes?

Thus there are **38 positive integers** not exceeding 1000 that are a perfect square or a perfect cube.

## How many three digit positive integers are there?

**Six three**-digit positive integers that can be formed from the digits 3 4 and 8 . In fact we could list them all if we really wanted to: 348 384 438 483 834 and 843 . The correct answer is B 6 .

## How many positive integers not exceeding 1000 are not divisible by 7 or 11?

==> The number of positive integers divisible by 7 but not by 11 is 142 – 12 = 130. ==>the number of positive integers less than 1000 that are divisible by either 7 or 11 is 142 + 90 – 12 = **220**.

## How many four digit positive integers are there such that at least two digits are the same?

such numbers. In total there are 40+135=**175** four-digit positive integers in which exactly two digits are used and one odd digit is used in three of the four positions. such numbers.

## How many 4 − digit positive integers are there whose sum of the digits is 20?

Total: There are **1+6+3+3+6+1**=20 four-digit positive integers with digit sum 20. where x1 x2 x3 x4 are integers satisfying x1≥1 x2≥0 x3≥0 x4≥0.

## What are positive integers less than 100?

**08 17 26 35 44 53 62 71 80**. Let n be a positive integer with n<10. How many positive integers less than 100 have digit sum equal to n?

## What are the integers between 4 and 4?

Therefore the integers which lie between -4 and 4 are **0 1 2 and 3**.

## Is 5 a positive integer?

**zero**: 1 2 3 4 5 … .

## How many positive integers from 1/100 including 1 and 100 are divisible by 3 or by 5 but not by both?

There are 20 numbers divisible by 5 between 1 and 100 and 33 numbers divisible by 3 between 1 and 100. So there are 20 + 33 = 53 so **53** numbers divisible by one or the other but this also includes every number which is divisible by both 5 and 3 twice.

## How many positive integers that are <= 100 that are divisible by 2 or 3?

**33 positive integers**till 100 are divisible by 3. Now the above number of positive integers contains numbers which are divisible by 2 and 3 also so we have to subtract these many integers from 20. 16 numbers of positive integers are divisible by 6.

## How many numbers between 1 and 100 are divisible by both 3 and 4?

Hence **8 numbers** are there from 1 to 100 which are divisible by both 3 & 4.

## How many positive integers less than 100 are divisible by both 3 and 7?

But since 105 > 100 there is no number less than 100 which is divisible by all 3 5 and 7. So there are **0 positive integers** which are less than 100 and are divisible by 3 5 and 7.

## What is an integer less than?

An integer can be **zero** greater than zero or less than zero.

## What are the multiples of 3 less than 20?

Multiples of 3: 3 **6 9 12 15 18 21 24 27**…

## How many positive numbers less than 20 Cannot be written as the sum of two prime numbers?

So **2** is the only even number less than 20 that cannot be written as a sum of 2 primes. Any odd integer that is the sum of two primes must be of the form 2+p where p is an odd prime. Hence for p = 3 5 7 11 13 17 we have 5 7 9 13 15 19. Therefore 1 3 11 17 cannot be written as a sum of two primes.

## Which are non negative integers?

A non negative integer is an integer that **that is either positive or zero**. It’s the union of the natural numbers and the number zero. Sometimes it is referred to as Z^{*} and it can be defined as the as the set {0 1 2 3 … }. Z the set of integers is defined as {… -3 -2 -1 0 1 2 3 …}.

## What are integers less than 15?

Answer: five integers less than -15 are **-16 -17 -18 -19 -20 -21**…

## Is 18 and 23 are Coprime?

18 and 23 are coprime **integers** as they don’t have any common factor other than 1.

## Is Pi a real number?

**Pi is an irrational number**which means that it is a real number that cannot be expressed by a simple fraction. … When starting off in math students are introduced to pi as a value of 3.14 or 3.14159.

## Is an real number?

**in fact pretty much any number that you can think of**. This can include whole numbers or integers fractions rational numbers and irrational numbers. Real numbers can be positive or negative and include the number zero.

## Div 5- How many positive integers less than 100 are neither multiples of 2 or 3?

## How many positive integers not exceeding 2001 are multiples of 3 or 4 but not 5 ?

## How many positive integers less than 101 are multiples of either 5 or 7 but not both at once?

## Div. 3- How many positive integers less than 250 are multiples of 4 but NOT multiples of 6?