Discussion
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- Question
What is the value of 13×7+17×11+111×15+...+1899×903 ?
Options- A. 21/509
- B. 18/403
- C. 25/301
- D. 29/31
- Correct Answer
- 25/301
- 1. If 1+121+141+161+181-131-151-17 = 1+ 1x , then what is the value of x?
Options- A. 6
- B. 8
- C. 5
- D. 7 Discuss
- 2. If 11+11+11+1x = 58 , then what is the value of x?
Options- A. 2
- B. 3
- C. 1
- D. 4 Discuss
- 3. What is the value of 3.6×1.62+0.48×3.61.8×0.8+10.8×0.3-2.16 ?
Options- A. 2.4
- B. 2
- C. 4
- D. 3 Discuss
- 4. What is the value of {sin (90 ? x) cos [? ? (x ? y)]} + {cos (90 ? x) sin [? ? (y ? x)]}?
Options- A. -cos y
- B. -sin y
- C. cos x
- D. tan y Discuss
- 5. What is the value of [tan (90 ? A) + cot (90 ? A)]2/[2 sec2(90 ? 2A)] ?
Options- A. 0
- B. 1
- C. 2
- D. ? 1 Discuss
- 6. What is the unit digit of 15+25+35+...+205 ?
Options- A. 0
- B. 5
- C. 2
- D. 4 Discuss
- 7. N is the smallest three digit prime number. When N is divided by 13, then what will be the remainder?
Options- A. 8
- B. 9
- C. 7
- D. 10 Discuss
- 8. p3 + q3 + r3 ? 3pqr = 4. If a = q + r, b = r + p and c = p + q, then what is the value of a3 + b3 + c3 ? 3abc?
Options- A. 4
- B. 8
- C. 2
- D. 12 Discuss
- 9. If ? and ? are the roots of the equation x2+ x ? 1 = 0 , then what is the equation whose roots are ?5 and ?5 ?
Options- A. x2 + 7x ? 1 = 0
- B. x2 ? 7x ? 1 = 0
- C. x2 ? 11x ? 1 = 0
- D. x2 + 11x ? 1 = 0 Discuss
- 10. If x and y are natural numbers such that x + y = 2017, then what is the value of (? 1)x+ (? 1)y ?
Options- A. 2
- B. ? 2
- C. 0
- D. 1 Discuss
Simplification problems
Search Results
Correct Answer: 8
Correct Answer: 2
Correct Answer: 3
Correct Answer: -cos y
Correct Answer: 2
Correct Answer: 0
Correct Answer: 10
Correct Answer: 8
Correct Answer: x2 + 11x ? 1 = 0
Correct Answer: 0
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