Math, asked by ratandeepkaur, 9 months ago

please tell
3. 2
Squares and Square Roots
55
Exercise 3.2
1. Write five numbers which you can decide by looking at their one's digit that they are
not square numbers.
2. What will be the unit digit of the squares of the following numbers?
(i) 951
(ii) 502
(iii) 329
(iv) 7643 (v) 5124
(vi) 7625
(vii) 68327 (viii) 95628
(ix) 99880 (x) 12796
3. The following numbers are obviously not perfect squares. Give reason.
(1) 4567
(ii) 2453
(iii) 6298
(iv) 46292
(v) 64000
4. The square of which of the following numbers would be an odd number or an even
number? Why?
(1) 573
(ii) 4096
(iii) 9267
(iv) 57916
5. How many natural numbers lie between square of the following numbers?
(i) 12 and 13 (ii) 35 and 36
6. Without adding, find the sum.
(i) 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15
(i) 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23 + 25 + 27 + 29​

Answers

Answered by shashank2303
9

Answer:-

1.Any digit which has 2, 3, 7, 8 in its ones place are not perfect square numbers and also 0 in some numbers like 212, 433,10, 27, 48.

2.

  1. 1
  2. 4
  3. 1
  4. 9
  5. 6
  6. 5
  7. 9
  8. 4
  9. 0
  10. 6

3. because their ones place is 2, 3, 7, 8, 0 so they are not perfect squares.

4.odd numbers always have odd square and even numbers also have even square.

5.

  1. 25
  2. 71

6.(a) 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15

total numbers are 8

do the square of 8 = 64

sum of given numbers is

1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 = 64

(b) 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23+ 25 + 27 + 29

total numbers are 25

do the square of 25 = 225

sum of given numbers is

1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23+ 25 + 27 + 29 = 225.

Hope that it will help you!!

Please mark me as a brainliest.

Answered by userasheeralikhan42
0

Answer:

hi

Step-by-step explanation:

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