2281 . If x+y=a and x-y=b, then 2xy=

  • A. a2+b22
  • B. a2-b22
  • C. a+b2
  • D. ab2
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2282 . If x+y>4 and x<3 then y>1 is true

  • A. always
  • B. only if x<0
  • C. x>9
  • D. only if x = 0
  • E. Never
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2286 . If x + 2y ≤ 3, x > 0 and y > 0, then one of the solutions is--

  • A. x = -1, y = 2
  • B. x = 2, y = 1
  • C. x = 1, y = 1
  • D. x = 0, y = 0
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2288 . If x + y > 4 and x > 3, then y > 1 is true.

  • A. always
  • B. only if x < 0
  • C. only if x > 0
  • D. only if x = 0
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2293 . If x : y = 5 : 3, then (8x – 5y) : (8x + 5y) =?

  • A. 3 : 12
  • B. 8 : 13
  • C. 3 : 11
  • D. 5 : 11
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2294 . If x <0 and y> 0?

  • A. (1) x /y < 0; (2) y-x >0 a. statement (1)ALONE is sufficient ,but statement
  • B. Alone is not sufficient (b) statement
  • C. (2)ALONE is sufficient ,but statement (1) alone is not sufficient
  • D. (c) BOTH statements TOGETHER are sufficient ,but NETTER statement ALONE is sufficient
  • E. EACH statement ALONE is sufficient
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