High School: 9th and 10th Grade - Math - Properties Of Numbers 2 Solution

Q.1.

What is the smallest prime number?

0%
2
0%
1
0%
0
0%
-1

Q.2.

Which number is the odd man out: 71, 17, 11, 39?

0%
11
0%
17
0%
39
0%
71

Q.3.

For those of you with stamina: How many prime numbers are there between 1 and 100 inclusive?

0%
29
0%
26
0%
27
0%
25

Q.4.

Which of the following statements is wrong?

0%
Two is an even number and a prime number
0%
Other than the number 2, there are no even prime numbers
0%
If you add two odd numbers, you get another odd number
0%
If you add two even numbers, you get another even number

Q.5.

Which of the following statements is wrong?

0%
13 is an odd number
0%
13 × 13 = 159
0%
13 is a prime number
0%
13 is the sixth smallest prime number

Q.6.

How many prime numbers are there between 1 and 30?

0%
10
0%
12
0%
11
0%
9

Q.7.

Which number is the odd man out: 49, 15, 41, 9?

0%
9
0%
15
0%
49
0%
41

Q.8.

Which of the following statements is wrong?

0%
If a number is divisible by 9, then it is divisible by 3
0%
If you add two prime numbers together, you get another prime number
0%
If you subtract 1 from an even number, you get an odd number
0%
There are four prime numbers between 1 and 10

Q.9.

Which two prime numbers have to be added together to give 38?

0%
11 + 27
0%
19 + 19
0%
23 + 15
0%
29 + 9

Q.10.

Which number is the odd man out: 64, 32, 144, 100?

0%
144
0%
64
0%
100
0%
32

Q.11.

What is a prime number?

0%
A number that is only divisible by 1 and itself
0%
A number that cannot be squared
0%
A whole number that divides into another whole number
0%
An odd number that is divisible by 3

Q.12.

How can we recognize if a number is divisible by 6?

0%
A number is divisible by 6 if it is odd and divisible by 3
0%
A number is divisible by 6 if it is even and divisible by 3
0%
A number is divisible by 6 if the sum of its digits total 3
0%
A number is divisible by 6 if it is even and divisible by 2

Q.13.

Which is the smallest common multiple of 6 and 15?

0%
2
0%
3
0%
5
0%
6

Q.14.

How can we recognize if a number is divisible by 3?

0%
A number is divisible by 3 if it is an odd number
0%
A number is divisible by 3 if it ends in 3
0%
A number is divisible by 3 if the sum of its digits is divisible by 3
0%
A number is divisible by 3 if it is a square number

Q.15.

How can we recognize if a number is divisible by 25?

0%
A number is divisible by 25 if it ends in 00, 25, 50 or 75
0%
A number is divisible by 25 if it is divisible by 8
0%
A number is divisible by 25 if the last two digits are divisible by 8
0%
A number is divisible by 25 if it is odd and divisible by 3

Q.16.

How can we recognize if a number is divisible by 8?

0%
A number is divisible by 8 if it is a square number
0%
A number is divisible by 8 if it ends in 2 or 4
0%
A number is divisible by 8 if the last two digits are divisible by 8
0%
A number is divisible by 8 if the last three digits are divisible by 8

Q.17.

How can we recognize if a number is divisible by 9?

0%
A number is divisible by 9 if it is an odd number
0%
A number is divisible by 9 if the sum of its digits is divisible by 9
0%
A number is divisible by 9 if the last two digits are divisible by 4
0%
A number is divisible by 9 if the sum of its digits total 3

Q.18.

What is the next prime number after 7?

0%
9
0%
11
0%
13
0%
27

Q.19.

What is 15 squared?

0%
150
0%
175
0%
225
0%
250

Q.20.

Which are the factors of 24?

0%
1, 2, 3, 4, 6, 8, 12, 24
0%
2, 3, 4, 6, 8, 12
0%
1, 2, 3, 4, 5, 8, 12, 24
0%
1, 2, 4, 6, 12, 24

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