Mental Ability PYQs
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Prelims 2001 – 2000 · page 7 of 11Tap an option to check it. For one question at a time, use Start practice above.
The following table shows the percentage change in the consumption of electricity by five towns P, Q, R, S, T from 1986 to 1988:
Town Per cent change from 1986 to 1987 From 1987 to 1988
P +8 −18 Q +15 −11
R +6 +9 S −7 −5
T +13 −6
If town T consumed 500,000 units in 1986, how much did it consume in 1988?
Solve the given equations:
x² + y² = 34 x⁴ − y⁴ = 544 The values of x and y are
A worker reaches his factory 3 minutes late if his speed from his house to the factory is 5 km/hr. If he walks at a speed of 6 km/hr, then he reaches the factory 7 minutes early. The distance of the factory from his house is
A conveyer belt delivers baggage at the rate of 3 tons in 5 minutes, and a second conveyer belt delivers baggage at the rate of 1 ton in 2 minutes. How much time will it take to get 33 tons of baggage delivered using both the conveyer belts?
Water is filled in a container in such a manner that its volume doubles after every five minutes. If it takes 30 minutes for the container to be full, in how much time will it be one-fourth full?
A city has a population of 3,00,000 out of which 1,80,000 are males. 50% of the population is literate. If 70% of the males are literate, the number of literate females is
In a survey, it was found that 80% of those surveyed owned a car while 60% of those surveyed owned a mobile phone. If 55% owned both a car and a mobile phone, what per cent of those surveyed owned a car or a mobile phone or both?
In 1930, a person’s age was 8 times that of his son. In 1938, the father’s age became ten times that of his son’s age in 1930. The ages of the son and father in 1940 were, respectively.
In the above figure, ABCD is a cyclic quadrilateral, AB = BC and angle BAC = 70°, then angle ADC is
Anand must be a vegetarian because he is a Buddhist. The argument assumes that
A person travels from X to Y at a speed of 40 kmph and returns by increasing his speed by 50%. What is his average speed for both the trips?
A rectangular water tank measures 15 m × 6 m at top and is 10 m deep. It is full of water. If water is drawn out lowering the level by 1 metre, how much of water has been drawn out?
An accurate clock shows 8 o’clock in the morning. Through how many degrees will the hour hand rotate when the clock shows 2 o’clock in the afternoon?
The monthly income of Komal and Asha are in the ratio of 4 : 3. Their monthly expenses are in the ratio of 3 : 2. However, both save Rs. 600 per month. What is their total monthly income?
If X = –2, then X³ – X² – X – 1 is equal to
Examine the following relationships among members of a family of six persons A, B, C, D, E and F.
I.The number of males equals that of females.II.A and E are sons of F.III.D is the mother of two, one boy and one girl.IV.B is the son of A.V.There is only one married couple in the family at present.Which one of the following inferences can be drawn from the above?
In a certain code, MARCH is written as OCTEJ. How is RETURN written in that code?
A, B, C, D, E and F, not necessarily in that order, are sitting in six chairs regularly placed around a round table. It is observed that A is between D and F. C is opposite D. D and E are not on neighbouring chairs.
Which one of the following must be true?
In a class there are 18 boys who are over 160 cm tall. If these boys constitute three fourths of the boys and the total number of boys is two third of the number of students in the class, then what is the number of girls in the class?
A rectangular piece of iron sheet measuring 50 cm by 100 cm is rolled into a cylinder of height 50 cm. If the cost of painting the cylinder is Rs. 50 per square metre, then what will be the cost of painting the outer surface of the cylinder?