Question : The average of T1 and T2 is 15. The average of T3 and T4 is 35. What is the average of T1, T2, T3, and T4?
Option 1: 24
Option 2: 30
Option 3: 28
Option 4: 25
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Correct Answer: 25
Solution : Given that the average of T1 and T2 is 15, the sum of T1 and T2 is 15 × 2 = 30 Similarly, given that the average of T3 and T4 is 35, the sum of T3 and T4 is 35 × 2 = 70 So, the sum of T1, T2, T3, and T4 is 30 + 70 = 100 Since there are 4 numbers, the average of these 4 numbers is $\frac{100}{4}$ = 25 Hence, the correct answer is 25.
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Question : The average of D1 and D2 is 40. The average of D2 and D3 is 45. The average of D1 and D3 is 55. What is the value of D3?
Option 1: 60
Option 2: 45
Option 3: 50
Option 4: 55
Question : P1 is the average of all prime numbers below 12 and P2 is the average of all prime numbers between 12 and 30. What is the value of 5P1 – P2?
Option 1: 7.8
Option 2: 8.6
Option 3: 9.8
Option 4: 7.5
Question : The average age of 30 students is 20 years and the average age of 20 other students is 30 years. The average age of the total number of students is:
Option 1: 24 years
Option 2: 25 years
Option 3: 48 years
Option 4: 50 years
Question : In which of the following articles, "Right against Exploitation" are mentioned?
Option 1: Article 23-24
Option 2: Article 32-35
Option 3: Article 25-28
Option 4: Article 29-30
Question : Article_______of the Indian Constitution deals with the "right to constitutional remedies".
Option 1: 28-33
Option 2: 32-35
Option 3: 25-30
Option 4: 22-25
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