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11+
11-Plus Maths
Properties Of Numbers 3 (Difficult)
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Q.1
Which number is the odd man out: 1, 3, 5, 7, 11
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1
0%
3
0%
7
0%
11
Q.2
How many factors does the number 12 have?
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4
0%
5
0%
6
0%
An infinite amount
Q.3
Which number is the odd man out: 27, 39, 57, 71, 87
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39
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57
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71
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87
Q.4
How many square numbers are there between 1 and 100 inclusive?
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7
0%
8
0%
9
0%
10
Q.5
The square of a negative number will be …?
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… a positive number
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… a negative number
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… either a positive or a negative number
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… neither a positive nor a negative number
Q.6
A square number is the result of multiplying a number by itself. The square of an odd number will always be…?
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A prime number
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An odd number
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An even number
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Either an odd or an even number
Q.7
Which of the following numbers is a multiple of 18?
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3
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6
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9
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36
Q.8
Which of the following statements is false?
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All prime numbers are odd
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Square numbers can be odd or even
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29 is a prime number
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121 is a square number
Q.9
Which of the following numbers is a factor of 279?
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5
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7
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9
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11
Q.10
How many prime numbers are there between 30 and 60 inclusive?
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5
0%
6
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7
0%
8
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