• Call Us : 03082533000 (WhatsApp)
  • Email Us : TestPointpk.com@gmail.com
Testpoint Whatsapp group Testpoint Whatsapp group
Sticky Note
For i^2 = -1, if 3i (2 + 5i) = x + 6i, then x =?
  1. 5i
  2. 15i
  3. -15
  4. None of these
Explanation

The calculation confirms that:

3i(2 + 5i) = 6i + 15i^2

= 6i - 15

Comparing this to x + 6i:

x = -15

Related MCQs

Matrix multiplication is?
  1. Commutative
  2. Associative
  3. Distributive
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Rank of a 3 × 3 identity matrix is?
  1. 1
  2. 2
  3. 3
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Slope of line 2y - x + 8 = 0?
  1. 1/2
  2. 1/3
  3. 1/4
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
If f(x) = 5x + x² - 1 and g(x) = 2x + 5, find f(g(4))?
  1. 233
  2. 133
  3. 333
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Period of tan(x/3)?
  1. 3π
  2. 2π
  3. π
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Test Point Whatsapp Channel

All Rights Reserved © TestPointpk.com