important aptitude questions

How many number plates can be made if the number plates have two letters of the English alphabet (A-Z) followed by two digits (0-9) if the repetition of digits or alphabets is not allowed?

What is the next number in the series 70,54,45,41?

A store is selling a jacket on sale at 30% off the marked price. A matching pair of pants is on sale at 40% off the marked price. If the marked price of the pants is Rs. 8500 less than the marked price of the jacket and the total sale price of both items is Rs. 23500, then what is the marked price of the jacket?

If we add x to both numerator and denominator of the fractions ⅔ and 20/23 the resulting fractions are equal x is

In this problem ABS(X)is the mathematical value of X without regard to its sign. for example ABS(3)IS 3 and ABS(-3) is also 3.if the equation ABS(x+12)+ABS(x-5)=r is satisfied by infinitely many values of x the value of r is

Babla alone can do a piece of work in 10 days. Ashu alone can do it in 15 days. The total wages for the work is Rs.5000. How much should be Babla be paid if they work together for an entire duration of work?

A,B and C can together do some work in 72 days.A and B together do two times as much work as C alone, and A and C together can do our times as much word as B alone. Find the time taken by C alone to do the whole work.

Considering a hash table with 100 slots. Collisions are resolved using chaining. Assuming simple uniform hashing, what is the probability that the first 3 slots are unfilled after the first 3 insertions? (NOTE:100 ^ 3 means 100 raised to the power 3)

How many of the integers from 1 to 86 (inclusive) contain the digit 4 or have the digit sum divisible by 4?

An Aeroplane has four emergency exits. In an emergency it requires 8 seconds per passenger to evacuate the plane, if the hand baggage is not carried by the passenger. How long will it take to eliminate 53 passengers in an emergency?

A certain number of teams took part in a competition each team in the competition must play one game with each of the other teams, how many teams took part in the competition if they played 55 games in all?

Your friend places 1oo cards in a row, one at which contains the Jack of the club that you need to guess. You pick the card at position 15. The host removes all the cards except the card chosen by you at position 15 and another card at position 87. He now says. One of these two cards is the Jack of Clubs. What Is the probability that the card Is at position 87?

There are two bags containing white and black balls.in the first bag there are 8 white and 6 black balls and in the second bag there are 4 white and 7 black balls.one of the bag is chosen at random from it.find the probability of this ball is being black?

32 times of a two-digit number is 23 times the number obtained by reversing its digit. The sum of its digit is 15 Find the number:

In a cricket tournament, 16 school teams participated. A sum of Rs.8000 is to be awarded among them as prize money. If the team placed last is award Rs.275 as prize money and the award increases by the same amount for successive finishing places, how much will the team placed first receive?

A and B completed a work together in 5 days. Had A worked at twice his own speed and B half his own speed, it would have taken them 4 days to complete the job. How much time would it take for A alone to do the job?

In this question, x^y stands for x raised to the power y. For example,2^3=8 and 4^1.5=8. If a,b are real numbers such that a+b=3, a^2+b^2=7, the value of a^4+b^4 is?

The average temperature of may, July and august was 31 degrees. The average temperature of July, august and October was 30 degrees, if the temperature of May was 30 degrees , find the temperature October (in degrees)

Let N be the greatest number that will divide 148, 246 and 623 leaving remainders 4, 6 and 11 respectively. What is the remainder if N is divided by 7?

Eesha bought two varieties of rice, costing 50 rs per kg and 60 rs pre kg each, and mixed them in some ratio. Then she sold the mixture at 70 rs per kg. Making a profit of 20 percent. What was the ratio of the mixture?

P,q,r,s are four cities on a straight highway, not necessarily in that order. The distance between the following table
What is the order of the cities in the highway?

Fishing is a serious environmental issue.It has been determined by the scientists that if the net of a trawler has mesh size x cm by x (square mesh) then the percentage of fish entering the net that are caught in the net is (100-0.02x^2-0.05x.for example if the mesh size is zero 100% of the fish that enter the net will be caught. The trawler with net with a square mesh that was suspected of using an illegal size net dropped its net to the ocean floor near the damand and coast guard officials arrested the crew.the scientists later looked at the size of the fish caught and estimated that the net used by the trawler at least 97.93% of the fish entering the net would be caught. What is the maximum value of x for the net by the trawler?

We are driving along a highway at a constant speed of 55 miles per hour (mph). You observe a car one half mile behind you. The car is moving fast and zooms past you exactly one minute later. How fast is this car traveling (mph) if its speed is constant?

Of height 36 m at the edge of a road broke ( While remaining attached to the tree ) at a certain height and it fell in such a way that touched the other edge of the road. If the breadth of the road is 12m. Then the height at which the tree broke was

A store is selling a jacket on sale at 30% off the marked price. A matching pair of pants is on sale at 40% off the marked price. If the marked price of the pants is Rs. 8500 less than the marked price of the jacket and the total sale price of both items is Rs. 23500, then what is the marked price of the jacket?