Question

How many non square numbers are there between 20²and 21²

Answer 1

Answer:

The number of non-square numbers between two square no. is equal to 2n if the given square no.s are (n)2* and (n+1)2*.

Step-by-step explanation:

here( n)= 20

and( n+1)= 21

• So there are 2×20 =40 non-square numbers between (20)2* and (21)2*.

Answer 2

Answer:

402 is answer of 20×20=40,21×21= 441 441÷40= 11.025