Class X

If p, q are two prime numbers, then LCM(p, q) is :
  1. p
  2. q
  3. pq
  4. 1
The product of three consecutive positive integers is divisible by
  1. 4
  2. 5
  3. 6
  4. 8
Which of the following is not an irrational number ?
  1. 5 - √3
  2. 5 + √3
  3. 4 + √2
  4. 5 + √9
Which of the following numbers has terminating decimal expansion?
  1. 37/45
  2. 21/(2356)
  3. 17/49
  4. 89/(2232)
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
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