# What is the first 20 perfect squares?

So the first 20 square numbers are 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256, 289, 324, 361 and 400.
A.

### What number is a perfect square?

Remember, the square of a number is that number times itself. The perfect squares are the squares of the whole numbers: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100 … Here are the square roots of all the perfect squares from 1 to 100.
• #### Is the number 36 a perfect square?

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 36 is 6. Therefore, the square root of 36 is an integer, and as a consequence 36 is a perfect square.
• #### What is √ 9?

In mathematics, a square root of a number a is a number y such that y2 = a; in other words, a number y whose square (the result of multiplying the number by itself, or y⋅y) is a. For example, the principal square root of 9 is 3, which is denoted by √9 = 3, because 32 = 3. • 3 = 9 and 3 is nonnegative.
• #### Is the number 48 a perfect square?

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 48 is about 6.928. Thus, the square root of 48 is not an integer, and therefore 48 is not a square number.
B.

### Is there a perfect square in 30?

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 30 is about 5.477. Thus, the square root of 30 is not an integer, and therefore 30 is not a square number.
• #### What are all the factors of 9?

Table of Factors and Multiples
FactorsMultiples
1, 3, 9918
1, 2, 5, 101020
1, 111122
1, 2, 3, 4, 6, 121224
• #### How many factors does 30 have?

Factors
NUMBERFACTORS
273, 9
282, 4, 7, 14
302, 3, 5, 6, 15
322, 4, 8, 16
• #### What are the factors of 72?

The factors of 72. Answer : 1,2,3,4,6,8,9,12,18,24,36,72, Related Links : Is 72 a rational number?
C.

### How many positive factors of 80 are there?

The factors of 80. Answer : 1,2,4,5,8,10,16,20,40,80, Related Links : Is 80 a rational number?
• #### What are the factors of 85?

The factors of 85. Answer : 1,5,17,85, Related Links : Is 85 a rational number?
• #### What are the prime factors of 80?

80 is a composite number. 80 = 1 x 80, 2 x 40, 4 x 20, 5 x 16, and 8 x 10. Factors of 80: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80. Prime factorization: 80 = 2 x 2 x 2 x 2 x 5 which can also be written 80 = 24 x 5.
• #### What are the factors of the number 68?

68 is a composite number. 68 = 1 x 68, 2 x 34, or 4 x 17. Factors of 68: 1, 2, 4, 17, 34, 68. Prime factorization: 68 = 2 x 2 x 17, which can also be written 2² x 17.

Updated: 6th October 2019