How many factors of 1080are perfect squares?a)6b)4c)8d)12Correct answe...
The factors of 1080 which are perfect square:
1080 → 23 × 33 × 5
For, a number to be a perfect square, all the powers of numbers should be even number.
Power of 2 → 0 or 2
Power of 3 → 0 or 2
Power of 5 → 0
So, the factors which are perfect square are 1, 4, 9, 36.
Hence, Option B is correct.
View all questions of this testHow many factors of 1080are perfect squares?a)6b)4c)8d)12Correct answe...
The factors of 1080 which are perfect square:
1080 → 23 × 33 × 5
For, a number to be a perfect square, all the powers of numbers should be even number.
Power of 2 → 0 or 2
Power of 3 → 0 or 2
Power of 5 → 0
So, the factors which are perfect square are 1, 4, 9, 36.
Hence, Option B is correct.
How many factors of 1080are perfect squares?a)6b)4c)8d)12Correct answe...
If the question is like to find how many factors are perfect square of any number ..
step 1 -the very first step is to prime factorize it by hcf method or lcm method
eg.. here it is 1080
so we get 2×2×2 = 2³
5 = 5¹
3×3×3 = 3³
step 2- find the number of even number in the power considering 0 as a even number too
2³ = till 3 there are two (2) even numbers I. e 0,2
5¹= till 1 there are one (1) even number I. e 0
3³= till 3 there are two(2) even number i. e 0,2
step 3 - multiply the number of even numbers
2×1×2= 4 = and here is your answer