Challenger App

No.1 PSC Learning App

1M+ Downloads
image.png
image.png
image.png
Six boxes A, B, C, D, E and F are arranged in a vertical column but not necessarily in the same order. B is placed at second position from the top. Only D is placed between A and B. E is at one of the positions below D and there is only one box between E and D. F is not at the bottom most position. Which box is placed at second position from the bottom?
Which of the following numbers will replace the question mark (?) in the given series? 9, 10, 22, 69, 280,?
Find the amount Ravi needs to return to Monu, if he had borrowed ₹3,000 from Monu at 4% p.a. compound interest, compounded annually. 2 years ago.
Sujata is standing in a park facing the east direction. She then turns 135° anticlockwise. After that, she turns 90° anticlockwise. Then, she turns 45° clockwise. In which direction is she facing now?
image.png
image.png
Each of the digits in the number 318924765 is arranged in descending order from left to right. The position of how many digits will remain unchanged as compared to that in the original number?
Which of the following years was a leap year?
image.png
In Munnar, a travel company has three 4-seater cars and two 8-seater maxi cabs. The rate of each passenger for a round trip in a car is 225 and for a round trip in a maxi cab is ₹20. The average occupancy of the seats is 100%. What is the average earning of each vehicle for one round trip?
image.png
Select the set in which the numbers are related in the same way as are the numbers of the following sets. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13-Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) (5, 21, 2) (7, 33, 4)
Sujlam started from a point facing towards the west, turned left and walked for 10 m, then turned right and walked for 12 m, then turned left and walked for 11 m, and then turned left again at point P and walked for 17 m. Prior to turning left at point P. he was facing in which direction? (All turns are 90 degree turns only)
image.png
image.png
If the selling price of an almirah is doubled, profit is tripled. Find the profit percentage.
In a certain code language, MUTINY is written as 25149202113 and MAGIC is written as 397113. How will NECTAR be written in the same language?
Which of the following numbers will replace the question mark (?) in the given series? 23, 31, 95, 311, ?
How many such pairs of letters are there in the word 'DEVELOP' (in both forward and backward directions) each of which have as many letters between them in the word as there are in the English alphabetical order?
Select the option that is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster and the fourth letter-cluster is related to the third letter-cluster. FINE : GKQI : : MOST : NQVX : : SEAL : ?
The angles of a quadrilateral are in the ratio 2: 5: 7: 10. Find the difference between the greatest and the smallest angles of the quadrilateral.
In how much time will a sum of money double itself at 10 per cent per annum rate of simple interest?
Which of the following numbers will replace the question mark (?) in the given series? 8, 17, 33, 63, 114, 193, ?
image.png
The average age of Raj and his sister is 8 years. If Raj's age is 10 years, then find the age of his sister.

A decision is given followed by two statements I and II. Read all the information carefully and select the correct option.

Decision:

In order to promote tourism, Country W is declaring 20 of its cities as Heritage Sites.

Statements:

I. 4 of the 20 cities are located in hilly areas and have limited access to transport.

II. In the past whenever a city in Country W has been promoted for tourism, it has led to increased employment opportunities in that city.

image.png
How many such pairs of letters are there in the word 'ABILITY' (in both forward and backward directions) each of which have as many letters between them in the word as there are in the English alphabetical order?
There are four prime numbers taken in ascending order. The product of the first three prime numbers is 1771 and the sum of the last two prime numbers is 82. What is the product of the last two prime numbers?
image.png
Which of the following is the quadratic equation whose roots are -2 and 4?
image.png
image.png
image.png
Which of the following pairs of numbers is co-prime?
The difference between two numbers is 42 and they are in the ratio 5: 3. Find the smaller number.
image.png
image.png
Five students 1, 2, 3, 4 and 5 - are sitting around a circular table facing the centre. 4 is sitting to the immediate right of 1 and immediate left of 2. 5 is sitting second to the left of 1. Which of the following statements is true?
Pole E is to the north of pole U and east of pole R. Pole N is to the west of pole U and east of pole I. Pole J is to the south of pole I. What is the position of pole R with respect to pole U?
The ratio of the sum of all the interior angles to an exterior angle of a regular polygon is 24: 1. Find the number of sides of the polygon.
image.png
image.png
Find the fourth proportional of 4a + 7,11a + 3 and 6a, if a = 2.
A, B, C, D, E, F and G want to play a video game they purchased together. Each will get it on one day of the same week starting from Monday and ending on Sunday. No one gets it on same day of the week. A will play on Sunday. D will play immediately before A. B will play immediately after E. E will play on Wednesday. C will not get it on Monday. F gets it on a day between B and D. On which day will G get to play?
image.png
Find the third proportional of 18 and 54.