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