Question

Exercise 2.1
g. 19
Find the square of the following.
a. 35
b. 100
c. 90
d. 110
e. 3000
f. 17
h. 25
3
i. 0.1
J. 2.1
k.
1. 1-
2
7
Look at the ones digit of the following numbers and find the numbers which cannot be perfect squares
Give reasons
a. 2058
b. 1543
C, 10000
d. 2826
5000
1.90909090
h. 22038567
4225
j. 1296
k. 62500
1. 9859
g. 7778​

Answer 1

Answer:

2058

Step-by-step explanation:

Because it has step to step to di

Answer 2

Answer:

a.1225

b.1000

c.8100

d.12100

e.9000000

f.289

g.625

3) 0.01

4.41

a.No it's not a perfect square

no square ends with 8

b.No

no square ends with 3

c.Yes

the no.of zeroes is even

here the root is 100

d.2826

no

root vant be found for last 2 digits here

e.5000

no

the no.of zeroes is odd

90909090

No.The reason is roots can only end with zero in some exceptions

289

Yes

roots can end with 3

the root here is 17.

h)No

roots can't end with 7

4225

yes.

the roots of the last 2 digits is possible.

j.yes

roots can end with 6.here the root is 36

k.Yes

it has two zeroes and the the root of 625 is 25

so the root here is 250

9859

No

the last two digits don't have perfect root

7778

No.roots can't end with 8