Class VIII

What should come in place of both x in the equation x = 162 . 128 x
  1. 12
  2. 21
  3. 13
  4. 23
The least perfect square, which is divisible by each of 21, 36 and 66 is:
  1. 213444
  2. 214344
  3. 214434
  4. 231444
3 - 1 2 simplifies to: 3
  1. 3 4
  2. 4 3
  3. 4 3
  4. None of these
If a = 0.1039, then the value of 4a2 - 4a + 1 + 3a is:
  1. 0.1039
  2. 0.2078
  3. 1.1039
  4. 2.1039
If 5 = 2.236, then the value of 5 - 10 + 125 is equal to: 2 5
  1. 5.59
  2. 7.826
  3. 8.944
  4. 10.062
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