1
Q:

For any two real numbers a and b.

a-b2+b-a2 is

A) always zero B) never zero
C) positive only if a ≠ b D) positive if an only if a > b

Answer:   C) positive only if a ≠ b



Explanation:
Q:

What will be the value of xy, if x2+y2 = 45 and x-y=5 ?

A) 10 B) 15
C) 20 D) 25
 
Answer & Explanation Answer: A) 10

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0 818
Q:

If FRIEND is coded as HUMJTK, how can CANDLE be written in that code?

A) EDRIRL B) ESJFME
C) DCQHQK D) DEQJQM
 
Answer & Explanation Answer: A) EDRIRL

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0 570
Q:

A cylindrical vessel of radius 4 cm contains water . A solid sphere of radius 3 cm is dipped into the water until it is completely immersed . The water level in the vessel will rise by

A) 3.5 cm B) 2.25 cm
C) 2 cm D) 3.8 cm
 
Answer & Explanation Answer: B) 2.25 cm

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0 671
Q:

If cosec+sincosec-sin=53  then the value of sinis equal to

A) 1/2 B) 12
C) 32 D) 1
 
Answer & Explanation Answer: A) 1/2

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0 838
Q:

Two chords AB and PQ of a circle intersect at D inside a circle. If AD = 4 cm, DB = 6 cm, QD = 3 cm, the length of PQ is equal to

A) 11 cm B) 8 cm
C) 9 cm D) 10 cm
 
Answer & Explanation Answer: A) 11 cm

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0 790
Q:

If O is the centroid and AD, BE and CF are the three medians of Δ ABC with an area of 96 cm2 then the area of Δ BOD in cm2 is

A) 8 B) 12
C) 16 D) 24
 
Answer & Explanation Answer: C) 16

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0 691
Q:

In the following question, select the missing number from the given series.34, 69, 140, 283, ?, 1145

A) 440 B) 545
C) 570 D) 625
 
Answer & Explanation Answer: C) 570

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2 840
Q:

If Sinθ = √3/2 and 0°<θ<90°, then the value of tan(θ-15°) is

A) 1 B) 3
C) 31 D) 2
 
Answer & Explanation Answer: A) 1

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0 872