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- Question
What is the value of ?2 Sec 45 - Tan 30?
Options- A. (2?3 - 1)/3
- B. (?3 - 1)/?3
- C. (2?3 - 1)/?3
- D. (?3 - 1)/3
- Correct Answer
- (2?3 - 1)/?3
- 1. Two numbers are 90% and 75% lesser than a third number. By what % should the first number be increased so that it becomes equal to the second number?
Options- A. 250
- B. 200
- C. 150
- D. 100 Discuss
- 2. When a number is increased by 216, it becomes 140% of itself. What is the number?
Options- A. 540
- B. 756
- C. 450
- D. 675 Discuss
- 3. If [4(2x/5 - 3/2)]/3 + 7/5 = 37/5, then what is the value of x?
Options- A. -15
- B. 7/5
- C. 15
- D. -7/5 Discuss
- 4. Select the related number from the given alternatives. 12.5 : 6.25 :: 7 : ?
Options- A. 3.5
- B. 3.25
- C. 6.5
- D. 12 Discuss
- 5. If Sec ? = 13/12, then what is the value of Sin ??
Options- A. 5/13
- B. 12/5
- C. 12/13
- D. 5/12 Discuss
- 6. If the selling price is Rs 728 after getting a discount of 9%, what was the marked price?
Options- A. Rs 793.52
- B. Rs 800
- C. Rs 662.48
- D. Rs 667 Discuss
- 7. A natural number when increased by 12 equals 160 times its reciprocal. Find the number?
Options- A. 20
- B. 12
- C. 8
- D. 4 Discuss
- 8. What is the area (in square units) of the figure enclosed by the x-axis, the y-axis and the line x + 2y = 6 ?
Options- A. 3
- B. 6
- C. 9
- D. 12 Discuss
- 9. If a website is selling smartphone at Rs 18,000 which is marked at Rs 25,000, then what is the discount (in %) at which the smartphone is being sold?
Options- A. 25
- B. 22
- C. 28
- D. 20 Discuss
- 10. If on an item there is 12% discount on the marked price of Rs 10,000 but the item is sold at Rs 8,360 only then what additional discount (in %) did the customer get?
Options- A. 6
- B. 7
- C. 5
- D. 8 Discuss
More questions
Correct Answer: 150
Correct Answer: 540
Correct Answer: 15
Correct Answer: 3.5
Correct Answer: 5/13
Correct Answer: Rs 800
Correct Answer: 8
Explanation:
Let the required number be 'p'.
From the given data,
p + 12 = 160 x 1/p
=> p + 12 = 160/p
=> p(p + 12) = 160
=> P^2 + 12p - 160 = 0
=> p^2 + 20p - 8p - 160 = 0
=> P(p + 20) - 8(p + 20) = 0
=> (p + 20)(p - 8) = 0
=> p = -20 or p = 8
As, given the number is a natural number, so it can't be negative.
Hence, the required number p = 8.
Correct Answer: 9
Correct Answer: 28
Correct Answer: 5
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