Question

Q2: How many non-square numbers lie between 20 and 21'?
(a) 39
(b) 40

(c) 41
(d) 42
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Answer 1

Answer:

(c) 41

Step-by-step explanation:

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20×20=400

21×21=441

difference between this is 41

Answer 2

Answer:

here is your answer

Step-by-step explanation:

option c is correct

The questions should be how many natural numbers are there between the square of 20 and 21.

To answer this we need to know the value of the square of 20 and 21 respectively and subtract the square of 20 from the square of 21.

Square of 20 =20×20 =400

Square of 21 =21×21 =441

Now that we have got the squares calculated subtract the square of shorter number from the square of larger number.

Numbers lying between the square of 20 and 21 = 441-400=41

Therefore, there are 41 numbers lying between the square of 20 and 21.

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