Q.1
What is the smallest prime number?
  • 2
  • 1
  • 0
  • -1
Q.2
Which number is the odd man out: 71, 17, 11, 39?
  • 11
  • 17
  • 39
  • 71
Q.3
For those of you with stamina: How many prime numbers are there between 1 and 100 inclusive?
  • 29
  • 26
  • 27
  • 25
Q.4
Which of the following statements is wrong?
  • Two is an even number and a prime number
  • Other than the number 2, there are no even prime numbers
  • If you add two odd numbers, you get another odd number
  • If you add two even numbers, you get another even number
Q.5
Which of the following statements is wrong?
  • 13 is an odd number
  • 13 × 13 = 159
  • 13 is a prime number
  • 13 is the sixth smallest prime number
Q.6
How many prime numbers are there between 1 and 30?
  • 10
  • 12
  • 11
  • 9
Q.7
Which number is the odd man out: 49, 15, 41, 9?
  • 9
  • 15
  • 49
  • 41
Q.8
Which of the following statements is wrong?
  • If a number is divisible by 9, then it is divisible by 3
  • If you add two prime numbers together, you get another prime number
  • If you subtract 1 from an even number, you get an odd number
  • There are four prime numbers between 1 and 10
Q.9
Which two prime numbers have to be added together to give 38?
  • 11 + 27
  • 19 + 19
  • 23 + 15
  • 29 + 9
Q.10
Which number is the odd man out: 64, 32, 144, 100?
  • 144
  • 64
  • 100
  • 32
Q.11
What is a prime number?
  • A number that is only divisible by 1 and itself
  • A number that cannot be squared
  • A whole number that divides into another whole number
  • An odd number that is divisible by 3
Q.12
How can we recognize if a number is divisible by 6?
  • A number is divisible by 6 if it is odd and divisible by 3
  • A number is divisible by 6 if it is even and divisible by 3
  • A number is divisible by 6 if the sum of its digits total 3
  • 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?
  • 2
  • 3
  • 5
  • 6
Q.14
How can we recognize if a number is divisible by 3?
  • A number is divisible by 3 if it is an odd number
  • A number is divisible by 3 if it ends in 3
  • A number is divisible by 3 if the sum of its digits is divisible by 3
  • 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?
  • A number is divisible by 25 if it ends in 00, 25, 50 or 75
  • A number is divisible by 25 if it is divisible by 8
  • A number is divisible by 25 if the last two digits are divisible by 8
  • 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?
  • A number is divisible by 8 if it is a square number
  • A number is divisible by 8 if it ends in 2 or 4
  • A number is divisible by 8 if the last two digits are divisible by 8
  • 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?
  • A number is divisible by 9 if it is an odd number
  • A number is divisible by 9 if the sum of its digits is divisible by 9
  • A number is divisible by 9 if the last two digits are divisible by 4
  • A number is divisible by 9 if the sum of its digits total 3
Q.18
What is the next prime number after 7?
  • 9
  • 11
  • 13
  • 27
Q.19
What is 15 squared?
  • 150
  • 175
  • 225
  • 250
Q.20
Which are the factors of 24?
  • 1, 2, 3, 4, 6, 8, 12, 24
  • 2, 3, 4, 6, 8, 12
  • 1, 2, 3, 4, 5, 8, 12, 24
  • 1, 2, 4, 6, 12, 24
0 h : 0 m : 1 s