Class X

If p, q are two prime numbers, then LCM(p, q) is :
  1. p
  2. q
  3. pq
  4. 1
Every positive odd integer is of the form ________ where ‘q’ is some integer.
  1. 2q + 1
  2. 2q – 1
  3. 2q
  4. None of these
A rational number can be expressed as a terminating decimal if the denominator has factors
  1. 2, 3 or 5
  2. 2 or 3
  3. 3 or 5
  4. 2 or 5
How many prime factors are there in prime factorisation of 5005 ?
  1. 2
  2. 4
  3. 6
  4. 7
Any ____________ is of the form 4q + 1 or 4q + 3 for some integer ‘q’.
  1. positive odd integer
  2. positive even integer
  3. composite number
  4. prime number
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