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Browse complete papersArun and Barun can do a piece of work in 72 days. Barun and Gitu can do it in 120 days. Arun and Gitu can do it in 90 days. In what time can Arun alone do it?
120 days
100 days
80 days
150 days
Correct answer
120 days
{(476 + 424)2 - 4 × 476 × 424} = ?
2906
2706
2704
2904
Correct answer
2906
What is the appropriate number to replace the question mark (?) in the following expression?
C : 16 :: E : 36 :: G : ?
64
40
25
50
Correct answer
64
Find out the wrong number from the following sequence :
22, 33, 66, 99, 121, 279, 594
33
121
279
594
Correct answer
33
E is the son of A. D is the son of B. E is married to C. C is B ’s daughter. How does D relate to E ?
Brother
Uncle
Father-in-law
Brother-in-law
Correct answer
Brother
An equilateral triangle, a square and a circle have equal perimeter. If T denotes the area of the triangle, S the area of the square and C the area of the circle, then
S < T < C
T < C < S
T < S < C
C < S < T
Correct answer
S < T < C
What should come in the place of question mark (?) ?
CBD, GFH, KJL, ? , SRT
QOP
WVX
POQ
ONP
Correct answer
QOP
A man covers \(\frac{3}5{}\) of the total journey by rail \(\frac{7}{20}\) by bus and the remaining 6·5 kilometres on foot. His total journey is
65 kilometres
100 kilometres
120 kilometres
130 kilometres
Correct answer
65 kilometres
A boy moves from his house to school at the speed of 20 km/hr and returns back at the speed of 30 km/hr. Find his average speed during his journey.
25 km/hr
26 km/hr
24 km/hr
Data insufficient
Correct answer
25 km/hr
A boy multiplied a number by \(\frac{4}{5}\) instead of \(\frac{5}{4}\) Find his error percentage in calculation.
36%
56.25%
64%
84%
Correct answer
36%