Question

how many number lie between squares of 15 and 19​

Answer 1

Answer:

15²=225

19²=361

No. lying between squares of 15 and 19= 361-225=136

Answer 2

Answer:

1) Since, non-perfect square numbers between

${n}^{2} \: and \: ( {n + 1)}^{2} \: are \: 2n$

Here, n = 12

Therefore, non-perfect square numbers between 12 and 13 = 2n = 2 x 12 = 24

(ii) Since non-perfect square numbers between ,

Here, n = 25

Therefore, non-perfect square numbers between 25 and 26 = 2n = 2 x 25 = 50

(iii) Since, non-perfect square numbers between

here, n = 99

Therefore, non-perfect square numbers between 99 and 100 = 2n = 2 x 99 = 198