Discussion
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- Question
If x = 6+26 , then what is the value of x-1 + 1x-1 ?
Options- A. 2?3
- B. 3?2
- C. 2?2
- D. 3?3
- Correct Answer
- 2?3
- 1. In the following question, correct the equation by interchanging two signs. 4 x 3 ? 6 ÷ 2 + 7 = 8
Options- A. ? and +
- B. x and ?
- C. ÷ and x
- D. x and + Discuss
- 2. ( 1155 ) +(18 ? 6) × 9 =?
Options- A. 113
- B. 115
- C. 100
- D. 110 Discuss
- 3. Out of the 60 students of a class, 29 took Mathematics, 32 took Biology and 8 took none of the two subjects. How many students took both Mathematics and Biology?
Options- A. 8
- B. 9
- C. 7
- D. 6 Discuss
- 4. If 'Q ' means ' +', 'J ' means ' X',T ' ' means '- ' and 'K ' means ' ÷ ', then what is the value of18K3Q7J ?
Options- A. 15
- B. 10
- C. 18
- D. 12 Discuss
- 5. If a - 1a =7,then a2 + 1a2 =?
Options- A. 54
- B. 51
- C. 53
- D. 52 Discuss
- 6. If a + b + c = 27, then what is the value of (a ? 7)3 + (b ? 9)3 + (c ? 11)3 ? 3(a ? 7)(b ? 9)(c ? 11) ?
Options- A. 0
- B. 9
- C. 27
- D. 3 Discuss
- 7. What is the smplified value of Sin2A/1+Cos2A ?
Options- A. tan A
- B. cot A
- C. sin A
- D. cos A Discuss
- 8. What is the simplified value of Sec ACot A + Tan A2 ?
Options- A. 1 ? cos2A
- B. 2sin2A
- C. sec2A
- D. 0 Discuss
- 9. The mode of the data -3, 4, 0, 4, -2, -5, 1, 7, 10, 5 is
Options- A. 0
- B. 4
- C. -2
- D. 7 Discuss
- 10. Given that tan(? + 15°) = ?3. Then the value of ? is?
Options- A. 15°
- B. 75°
- C. 45°
- D. 65° Discuss
Simplification problems
Search Results
Correct Answer: ? and +
Correct Answer: 113
Explanation:
Given,( ) +(18 ? 6) =?
=5 + 12 × 9
=5 + 108
=113
Correct Answer: 9
Explanation:
Number of students who took only Mathematics n(m) = 29
Number of students who took only biology n(b) = 32
Total number of students n(t) = 60
Total number of students of both mathematics and biology n(m b) = 60 - 8 = 52
Total number of students who took both = 32 + 29 - 52 = 9
Correct Answer: 12
Correct Answer: 51
Correct Answer: 0
Correct Answer: tan A
Correct Answer: 1 ? cos2A
Correct Answer: 4
Correct Answer: 45°
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