Which number is divisible by 5?
  • 14
  • 26
  • 45
  • 72
Which number is divisible by 3?
  • 15
  • 22
  • 41
  • 52
Which number is divisible by 9?
  • 42
  • 72
  • 56
  • 35
2 is a ______ number.
  • composite
  • even
  • prime
  • both B and C
1 is:
  • a prime number
  • a composite number
  • neither prime nor composite
  • both
The smallest composite number is:
  • 2
  • 3
  • 4
  • 5
Which is a prime factor of 45?
  • 2
  • 3
  • 5
  • Both B and C
Which of these numbers is divisible by 6?
  • 18
  • 25
  • 30
  • A and C
The number 64 can be written as prime factors:
  • 2 × 32
  • 2⁶
  • 4 × 16
  • 8 × 8
Which test is used to check divisibility by 3?
  • Last digit is even
  • Number ends in 0
  • Sum of digits divisible by 3
  • Last digit divisible by 3
Which test is used to check divisibility by 5?
  • Last digit is 0 or 5
  • Number ends in 2
  • Sum of digits divisible by 5
  • Last digit is even
Which test is used to check divisibility by 9?
  • Last digit divisible by 9
  • Ends with 9
  • Sum of digits divisible by 9
  • Number even
Which number is divisible by both 2 and 5?
  • 30
  • 45
  • 75
  • 40
Which number is divisible by 11?
  • 143
  • 132
  • 99
  • All of these
2 × 3 × 5 is the prime factorization of:
  • 15
  • 20
  • 25
  • 30
Which is the greatest prime factor of 60?
  • 2
  • 3
  • 5
  • 7
Which of the following is a factor of every number?
  • 0
  • 1
  • 2
  • 5
A number ending with 0 will always be divisible by:
  • 2
  • 5
  • 10
  • All of these
Which of the following is not divisible by 3?
  • 36
  • 45
  • 19
  • 81
Which is the prime factorization of 50?
  • 2 × 5 × 5
  • 5 × 5
  • 10 × 5
  • 2 × 25
Which of the following is divisible by 4?
  • 12
  • 20
  • 28
  • All of these
Which of the following is not divisible by 5?
  • 45
  • 30
  • 22
  • 75
Which is the smallest prime factor of any even number greater than 2?
  • 1
  • 2
  • 3
  • 5
Which is the largest prime factor of 84?
  • 2
  • 3
  • 5
  • 7
Which is the prime factorization of 72?
  • 2³ × 3²
  • 2 × 36
  • 4 × 18
  • 6 × 12
If the sum of digits is divisible by 9, then the number is divisible by:
  • 2
  • 3
  • 5
  • 9
Prime factorization is useful to find:
  • HCF
  • LCM
  • Both
  • None
A number ending with 5 is divisible by:
  • 2
  • 5
  • 10
  • None
If a number is divisible by 2 and 3, it is also divisible by:
  • 4
  • 6
  • 12
  • 10
Which number is divisible by both 3 and 9?
  • 45
  • 27
  • 18
  • All of these
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