Class X

(256)0.16 x (256)0.09 = ?
  1. 4
  2. 16
  3. 64
  4. 256.25
(243)n/5 x 32n + 1 = ? 9n x 3n - 1
  1. 1
  2. 2
  3. 9
  4. 3n
1 + 1 = ? 1 + a(n - m) 1 + a(m - n)
  1. 0
  2. 1 2
  3. 1
  4. am + n
Given that 100.48 = x, 100.70 = y and xz = y2, then the value of z is close to:
  1. 1.45
  2. . 1.88
  3. 2.9
  4. 3.7
If m and n are whole numbers such that mn = 121, the value of (m - 1)n + 1 is:
  1. . 1
  2. 10
  3. 121
  4. 1000
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