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y = 1 , z = -3 ; 1 < 9
y = 0, z = - 2 ; 0 < 4
y = - 6, z = - 1 ; 36 > 1
y = -3 , z = - 4 ; 9 < 16
\ y = - 6 z = - 1
Ans : D
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Number of words for $4.50 = 
= 60 words
Number of words deleted = 12
Ans : D
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Nuts : Yoghurt : Chocolate flakes
= 1½ : 2½ : 3
= 3 : 5 : 6
Ans : C
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Number of concrete blocks for 1 set
= (4 + 3 + 2) 2
= 18
Blocks for 3 sets = 18 ´ 3
= 54
Ans : B
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If x = - 4/ 3 then its value becomes negative.
The above condition implies that its value is positive.
Hence x could equal each of the choices except Choice A.
Ans : A
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a ® b
5 ® 6
\ 5 - 2 (6)
= 5 - 12
= -7
Ans : E
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II only. 3 ® - 3
The reason : if a ³ b then a ® b = 
3 > - 3 then the expression becomes 
Ans : B
-
Let the weight of the sack of grain be 'x' pounds.
Ans : A
-
New average
Ans : C
-
Let the two consecutive even integers be (x) and (x + 2).
Ans : E
