Question

1. Which of them is a perfect square?

a) 576 b)941 c)65 d)none

2. Which of the following is not a perfect square?

a)62500 b)57600 c)90000 d)63147

3. Which of the following will have 4 at units place?

a)142

b)622

c)272

d)352

4. By observing the digits at ones place ,tell which of the following can be perfect square

a)100 b)927 c)625 d)576

5. If one number of the Pythagorean triplet is 2m then the other two are

a)m, m2

+1 b)m2

+1,m2

-1 c)m2

,m2

+1 d)m , m2

6. How many natural numbers lie between 52

and62
?

a)9 b)10 c)11 d)12

7. Which of the following triplets are Pythagorean?

a)(8,15,17) b)(12,35,38) c) (14,48,51)

8. Which of the following is the square root of 7056?

a) 86 b) 34 c) 54 d) 84

9. Find the squares of the following numbers

i)25 ii)30 iii)12

10. Find how many non-square number lie between the following pair of numbers

i)100 and121 ii)82

and 92

iii)302

and312​

Answer 1

Answer:

(1). a. part 576 is a perfect square.

(2).d. part 63147 is not a perfect square.

(3). d. part 352 have 4 at its unit digit.

(4).a ,c and d parts can be perfect squares.

(5).b .part is the answer.

(6). 9 natural numbers.

(7).( 14, 48,51) ia the pythogorean triplet.

(8). 84 is the square root of 7056.

(9).(I) 25^2=25×25=625

(ii) 30^2=30×30=900

(iii) 12^2=12×12=144

(10).(I). 100×2=200

200no. lies between 100& 121.

(ii). 82×2=164

(iii). 302×2=604

THANK YOU!!!!!

Answer 2

Step-by-step explanation:

By observing the digits at ones place ,tell which of the following can be perfect square

a)100 b)927 c)625 d)576