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- Question
If a + b + c + d = 4, then the value of 1(1-a)(1-b)(1-c) + 1(1-b)(1-c)(1-d) + 1(1-c)(1-d)(1-a) + 1(1-d)(1-a)(1-b)
Options- A. 0
- B. 1
- C. 4
- D. 1+ abcd
- Correct Answer
- 0
- 1. If x = y + 2 then x3 - y3 - z3 is
Options- A. 0
- B. 3xyz
- C. -3xyz
- D. 1 Discuss
- 2. If a+1b = 1 and b+1c = 1 then c+1a = ?
Options- A. 0
- B. 2
- C. 1
- D. 3 Discuss
- 3. If x2+1x2 = 98, then x3+1x3 = ?
Options- A. 970
- B. 1030
- C. -970
- D. -1030 Discuss
- 4. The angle of elevation of the top of a tower, vertically erected in the middle of a paddy field, from two points on a horizontal line through the foot of the tower are given to be ? and ? (?>?). The height of the tower is h unit. A possible distance (in the same unit) between the points is
Options- A. h(cot?-cot?)cos(?+?)
- B. h(cot? - cot?)
- C. h(tan? - tan?)tan? tan?
- D. h(cot?+cot?) Discuss
- 5. If the angle of elevation of the sun decreases from 45° to 30°, then the length of the shadow of a pillar increases by 60m. The height of the pillar is
Options- A. 60(?3+1) m
- B. 30(?3-1) m
- C. 30(?3+1) m
- D. 60(?3-1) m Discuss
- 6. If a = 1/a-5, then the value of a + 1/a = ?
Options- A. ?29
- B. ?-29
- C. - ?29
- D. ?27 Discuss
- 7. If a+1b= b+1c = c+1a (a , b, c are not equal) then the value of abc =
Options- A. + 1
- B. - 1
- C. +1 & -1
- D. None of the options Discuss
- 8. If ax + by = 1 and bx + ay = 2aba2+b2 then x2+y2a2+b2 is equal to
Options- A. 1
- B. 2
- C. 0.5
- D. 0 Discuss
- 9. If x, y, z are the three factors of a3 -7a - 6 , then value of x+y+z will be
Options- A. 3a
- B. 3
- C. 6
- D. a Discuss
- 10. If secA + tanA = a, then the value of cosA is
Options- A. a2+12a
- B. 2aa2+1
- C. a2-12a
- D. 2aa2-1 Discuss
Simplification problems
Search Results
Correct Answer: 3xyz
Correct Answer: 1
Correct Answer: 970
Correct Answer: h(cot?+cot?)
Correct Answer: 30(?3+1) m
Correct Answer: ?29
Correct Answer: +1 & -1
Correct Answer: 1
Correct Answer: 3a
Correct Answer: 2aa2+1
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