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TGPSC Group-I 2024 · Question 143 of 144

In a degree programme of a college, the number of students who opted for only Physics is twice the number of students who opted for Chemistry. The number of students who opted only for Chemistry is twice the number of students who opted for both Physics and Chemistry. Then the number of students who opted for Physics is how many times the number of students who opted for both Physics and Chemistry ?

Mental Ability

  1. A5
  2. B7Correct
  3. C6
  4. D3

Answer: B. 7

Explanation

Let both = x: only-Chemistry = 2x, only-Physics = 4x; Physics total = 5x — five times the 'both' group.

Source: TGPSC Group-I Preliminary Test 2024 official question paper booklet (held 9 Jun 2024, TEST 224) with Preliminary Key (MASTER), via Adda247

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