Question

it's urgent answer me please​

Answer 1

Answer:

1.

(a) 9 [∵(3)²=9]

(b) 1 [∵(1)²=1]

(c) 6 [∵(6)²=36]

(d) 1 [∵(9)²=81]

(e) 9 [∵(7)²=49]

(f) 4 [∵(2)²=4]

2.

Only, (b) is a perfect square number

(a) √7928 is not a natural number.

[∵ √7928=√[991×8, where 991 is not a perfect square, being a prime number]

(b) √1024=32. So, yes.

[∵√1024=√[2×2×2×2×2×2×2×2×2×2]

(c) √20000 is not a natural number.

[∵√20000=√[2×2×2×2×2×5×5×5×5]= 100√2]

(d) √42875 is not a natural number.

[∵√42875=√[5×5×5×7×7×7]=35√35]

(e) √438967 is not a natural number.

[∵438967 has no factors other than 1]

(f) √493039 is not a natural number.

[∵493039 has no factore other than 1]

3.

(a) (12)²=144 and, (13)²=169

So, numbers between 169 and 144 are:

169–144–1=24 numbers

(b) (25)²=625 and, (26)²=676

So, 676–625–1=50 numbers

(c) (8)²=64 and, (9)²=81

So, 81–64–1=16 numbers

Answer 2

Hey, the answer which you have marked as Brainliest to the question which I had also answered is wrong. First read the answers properly, then mark. Read it once and you will get to know. It's 2 not -2