Discussion
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- Question
If x+1x:x-1x=5:3 then the value of x is
Options- A. +- 1
- B. +-2
- C. +-3
- D. +-4
- Correct Answer
- +-2
- 1. If x+1x ?0 and x3+1x3 = 0, then the value of x+1x4 is :
Options- A. 9
- B. 12
- C. 15
- D. 16 Discuss
- 2. If 310 × 272 = 92 × 3n then the value of n is
Options- A. 10
- B. 12
- C. 15
- D. 20 Discuss
- 3. If l + m + n = 9 and l2+m2+n2 = 31 , then the value of lm + mn + nl will be
Options- A. 22
- B. 50
- C. 25
- D. -25 Discuss
- 4. What is the value of 36+729381+643
Options- A. 5/12
- B. 5/9
- C. 4/9
- D. 4/15 Discuss
- 5. If the value of 3-1.732 , then calculate the value of 243-12108-147
Options- A. 1.732
- B. -1.464
- C. 3.464
- D. -1.732 Discuss
- 6. The value of (1(p-n)(n-q)+1(n-q)(q-p)+1(q-p)(p-n)) is
Options- A. 1
- B. 0
- C. p+q+n
- D. 2np+q Discuss
- 7. The angle of elevation of the top of a tower from two horizontal points (in opposite sides) at distances of 25 meter and 64 meter from the base of tower are x and 90° - x respectively . The height of the tower will be
Options- A. 39 m
- B. 89 m
- C. 1.6 m
- D. 40 m Discuss
- 8. Simplify: (213 x 213 + 187 x 187)
Options- A. 80338
- B. 80438
- C. 60338
- D. 60438 Discuss
- 9. If 2x + 2(4 + 3x) < 2 + 3x > 2x + x/2; then x can take which of the following values?
Options- A. -3
- B. 1
- C. 0
- D. -1 Discuss
- 10. What should come in place of question mark (?) in the following question? 52000 ÷ 40 ÷ 65 × 30 = ? - ?400
Options- A. 580
- B. 620
- C. 720
- D. 780 Discuss
Simplification problems
Search Results
Correct Answer: 9
Correct Answer: 12
Correct Answer: 25
Correct Answer: 5/12
Correct Answer: -1.732
Correct Answer: 0
Correct Answer: 40 m
Correct Answer: 80338
Correct Answer: -3
Correct Answer: 620
Explanation:
52000 ÷ 40 ÷ 65 × 30 = ? - ?400
(52000 ÷ 40) ÷ 65 × 30 = ? - 20
(1300 ÷ 65) × 30 = ? - 20
20 × 30 = ? - 20
600 = ? - 20
? = 620
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