- What are the multiples of 81?
- Is 90 composite or prime?
- What is the highest common factor of 90?
- What is the highest common factor of 91?
- What are factors of 81?
- Is 69 a prime or composite?
- Is 17 prime or composite?
- Is 85 a prime or composite number?
- Is 91 divisible by any number?
- Why is 91 not prime?
- What are all the factors of 90?
- What are the first 4 multiples of 90?
- What is the HCF of 90 and 120?
- What is the GCF of 90 and 36?
- What are the multiples of 91?
- What are factors of 91?
- Is 90 a perfect square?
- What is the HCF of 91 112 and 49?

## What are the multiples of 81?

Answer : 81,162,243,324,405,486,567,648,729,810,891,972,1053,1134,1215,1296,1377,1458,1539,1620,1701,1782,1863,1944,2025,2106,2187,2268,2349,2430,2511,2592,2673,2754,2835,2916,2997,3078,3159,3240,3321,3402,3483,3564,3645,3726,3807,3888,3969, Related Links : What are the factors of 81?.

## Is 90 composite or prime?

If the factors of 90 are only 90 and 1, then we know that 90 is a prime number. Otherwise, 90 is a composite number. To explain better, if 90 is only divisible by 1 and 90, then it is a prime number, and if 90 is divisible by more than 90 and 1, then it is a composite number.

## What is the highest common factor of 90?

Greatest common factor (GCF) of 90 and 100 is 10. We will now calculate the prime factors of 90 and 100, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 90 and 100.

## What is the highest common factor of 91?

Greatest common factor (GCF) of 91 and 98 is 7. We will now calculate the prime factors of 91 and 98, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 91 and 98.

## What are factors of 81?

81 = 1 x 81, 3 x 27, or 9 x 9. Factors of 81: 1, 3, 9, 27, 81. Prime factorization: 81 = 3 x 3 x 3 x 3 which can also be written 3⁴. Since √81 = 9, a whole number, 81 is a perfect square.

## Is 69 a prime or composite?

The number 69 is a composite number. Its factors are 1, 3, 23, and 69.

## Is 17 prime or composite?

When a number has more than two factors it is called a composite number. Here are the first few prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, etc.

## Is 85 a prime or composite number?

Answer and Explanation: 85 is not a prime number; it is a composite number. 85 can be divided evenly by 1 and by 85. Since 85 ends in a ‘5,’ this tells you that it can also…

## Is 91 divisible by any number?

Solution: The number 91 is divisible by 1, 7, 13 and 91. Therefore 91 is composite since it has more than two factors. Summary: Divisibility tests can be used to find factors of large whole numbers quickly, and thus determine if they are prime or composite.

## Why is 91 not prime?

As we can see why is 91 not a prime number it is because it has more than two factors other than 1 and the number itself. It contradicts the definition of prime numbers. So 91 is a composite number because composite numbers have factors more than 2. Here we get four factors for 91 and they are 1, 13, 7, 91.

## What are all the factors of 90?

We know that the factors of the number 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90.

## What are the first 4 multiples of 90?

Answer : 90,180,270,360,450,540,630,720,810,900,990,1080,1170,1260,1350,1440,1530,1620,1710,1800,1890,1980,2070,2160,2250,2340,2430,2520,2610,2700,2790,2880,2970,3060,3150,3240,3330,3420,3510,3600,3690,3780,3870,3960,4050,4140,4230,4320,4410, Related Links : What are the factors of 90?

## What is the HCF of 90 and 120?

30Answer and Explanation: The HCF of 90 and 120 is 30. To find this, we first need to list all of the factors of both 90 and 120: 90: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45,…

## What is the GCF of 90 and 36?

18There is only one greatest common factor of 36 and 90 which is 18. There are also a number of common factors including 1, 2, 3, 6, 9, 18.

## What are the multiples of 91?

Answer : 91,182,273,364,455,546,637,728,819,910,1001,1092,1183,1274,1365,1456,1547,1638,1729,1820,1911,2002,2093,2184,2275,2366,2457,2548,2639,2730,2821,2912,3003,3094,3185,3276,3367,3458,3549,3640,3731,3822,3913,4004,4095,4186,4277,4368,4459, Related Links : What are the factors of 91?

## What are factors of 91?

These factors are 1, 7 13, and 91.

## Is 90 a perfect square?

No because 90 cannot be written in the form of product of two equal numbers so it is not a perfect square. For e.g. 81 can be written in the form 9×9 hence it is a perfect square.

## What is the HCF of 91 112 and 49?

7Hence the HCF of 49,91 and 112 is 7.