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
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
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
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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