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