**Q.1: What will be the “one’s digit” in the square of the following numbers ?**

a) 45

b) 256

c) 33,450

d) 4,801

e) 7,899

**Q.2: The square of which of the following numbers will be an even or odd number:**

a) 125

b) 227

c) 4,000

d) 29

e) 9,282

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**Q.3: Express the square of the following as a sum of two consecutive integers:**

a) 9

b) 13

c) 19

d) 15

e) 23

**Q.4: How many numbers lie between the squares of the following numbers ?**

a) 2 and 3

b) 10 and 11

c) 23 and 24

d) 12 and 13

e) 18 and 19

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**Q.5: Find the square of the following numbers without actual multiplication:**

a) 38

b) 44

c) 73

d) 65

e) 91

**Q.6: Write a Pythagorean triplet in which one member is:**

a) 10

b) 8

c) 16

d) 20

e) 14

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**Answers:**

**Q.1: a)** 5 **b) **6 **c) **0 **d)** 1 **e)** 1

**Q.2: a)** odd **b)** odd **c)** even **d)** odd **e)** even

**Q.3: a)** 40,41 **b)** 84,85 **c)** 180,181 **d)** 112,113 **e)** 264,265

**Q.4: a)** 5 **b)** 21 **c)** 47 **d)** 25 **e)** 37

**Q.5: a)** 1444 **b)** 1936 **c)** 5329 **d)** 4225 **e)** 8281

**Q.6: a)** 10,24,26 **b)** 8,15,17 **c)** 16,63,65 **d)** 20,99,101 **e)** 14,48,50

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