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Sticky Note
The fourth proportional to 8, 4, 2 is?
  1. 1
  2. 4
  3. 3
  4. None of these
Explanation

Let's find the fourth proportional.

If 8 : 4 :: 2 : x, then

8/4 = 2/x

2 = 2/x

x = 1

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If 6 workers complete a task in 8 days, how many days will 4 workers take to complete the same task at the same rate?
  1. 10 days
  2. 12 days
  3. 14 days
  4. None of these
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For an MCQ, the proportion correct is 0.70 in the upper group and 0.55 in the lower group. Using D = p_u - p_l, what is the discrimination index?
ایک MCQ کے لیے، اوپری گروپ میں درست کا تناسب 0.70 اور نچلے گروپ میں 0.55 ہے۔ D = p_u - p_l کا استعمال کرتے ہوئے، امتیاز انڈیکس کیا ہے
  1. +0.15
  2. -0.15
  3. +0.85
  4. -0.85
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The principal and operation accounts are in the ratio of 7:5. If Rs. 90,000 is transferred from the principal account to the operation account, the ratio becomes 5:4. What was the original amount in the principal account?
  1. Rs. 1,891,000
  2. Rs. 1,892,000
  3. Rs. 1,890,000
  4. None of these
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What is a ratio?
تناسب کیا ہے؟
  1. The sum of two quantities
  2. The comparison of two quantities
  3. The difference between two quantities
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
In the Mathematics department of a certain university, the student teacher ratio was 20:1. It was decided to increase the number of students and teachers by 50% and 10% respectively. The new student to teacher ratio is?
  1. 30:1
  2. 300:11
  3. 25:1
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