Test -2
  • 1. HCF of any consecutive numbers is
A) 1
B) None
C) 3
D) 2
E) 0
  • 2. LCM of any two consecutive numbers is
A) Sum of the numbers
B) Smallest of the two numbers
C) Difference of the numbers
D) Product of the numbers
E) Greatest of the numbers
  • 3. 5n where n€N ends with
A) 3
B) 0
C) 5
D) 2
E) 1
  • 4. 6n does not end with 0 because
A) Prime factors of 6 are 2 and 3
B) To have 0 in the unit's place the prime factors should be 2 and 5 both
  • 5. 7 X 5 is a
A) Data is insufficient
B) Prime number
C) Neither Prime nor Composite
D) Composite number
E) I don't know
  • 6. LCM OF 22 X 32X 5 and 2 X 33 is
A) 2 X 32 X 5
B) 22 X 33 X 5
C) 23
D) 23 X 3 2 X 5
E) 2 X 3 X 5
  • 7. HCF of 72 X 32 X 5 and 3 X 5 X 73
A) 3 X 5 X 72
B) 32 X 5
C) 52 X 7
D) 3 X 5 X 7
E) 32 X 5 X 73
  • 8. If a = 12 and b = 3 then r = ?
A) None
B) 12 = 3(4) + 0
C) q = 4
D) 0
E) 12 = 3(4)
  • 9. Fill in the blanks from top to bottom
A) 28,2,2,7
B) 7,2,2,28
C) 28,2,7,2
D) 28,7,2,2
E) 7,28,2,2
  • 10. How many prime numbers are there in between 1 to 100
A) 25
B) 24
C) 20
D) 76
E) 75
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