Challenger App

No.1 PSC Learning App

1M+ Downloads
There are four different points on a plane such that no three are collinear. The number of distinct straight lines that can be drawn through them is?
The distance between the pole and the center of curvature of a spherical mirror, in terms of its focal length f, is equal to:

The value of 0.6+(0.81(0.0144+0.40.5))0.6+(\sqrt{0.81}-(\sqrt{0.0144}+\frac{0.4}{0.5})) is

The following pie chart shows the percentage distribution of the expenditure incurred in manufacturing a scientific calculator. If 500products are manufactured and the direct labor cost on them amounts to ₹1,00,000, what should be the selling price of each product so that the manufacturer can earn a profit of 44%?

image.png
Rajan started from a point and walked a distance of 200 m towards the north. He then turned left and walked 300 m, turned right and walked 400m, and then turned left and walked 100 m. In which direction is Rajan facing now? (All turns are 90° turns only)
The average speed of Gaurav during a two-way journey is 15 km/h. If he walked a distance of 20 km every hour while going, then his speed while returning will be:
In the given letter-cluster pairs, the first letter-cluster is related to the second letter-cluster following a certain logic. Select the pair that follows the same logic. PRO : LJM ZEN : BWN
P, L, K, U, J, and Y went for a trip to Rajasthan and Uttar Pradesh in six consecutive months of the same calendar year. P preferred to visit Rajasthan in the month of November. U visited Uttar Pradesh exactly two months prior to P. Y preferred the month of July. K preferred to visit Rajasthan exactly between the months preferred by Y and U. L visited exactly one month prior to Y. In which month did K visit?
Six persons, A, B, C, D, E, and F, are sitting around a circular table. All are facing the center of the table. Only two persons are sitting between D and A. F is to the immediate right of C. E is second to the right of D. Who is sitting to the immediate right of F?

Study the diagram of the cross-section of a leaf given below. Which option shows the correct labelling?

image.png

During adolescence, several changes occur in the human body. Which of the following changes is associated with sexual maturation only in girls?
In December 2021, which state government inaugurated the "Pink Force" of Police to enhance safety and security for women and children?
Find the median of the data 11, 16, 33, 15, 51, 18, 71, 75, 22, 17.

Simplify (32)3+(22)2(3^2)^3+ (2^2)^2

Last year, Ranjan’s monthly salary was 34,500, and this year his monthly salary is 38,640. What is the percentage increase in Ranjan’s monthly salary this year over last year?
To reach point B from point A, Anita must walk 70 m towards the west, then take a right turn and walk 70 m, then take a left turn and walk 150 m, then take another left turn and walk 70 m, then take a left turn and walk 90 m, then take a right turn and walk 100 m, and finally take a left turn and walk130 m. How far and in which direction is point B from point A?
Which of the following numbers will replace the question mark (?) in the given series? 11, 21, 47, 97, 179, ?

Three statements are given, followed by three conclusions numbered I, II,and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.

Statements:

All phones are tablets.

No tablet is a calculator.

All drives are calculators.

Conclusions:

I. Some drives are phones.

II. Some calculators are phones.

III. No tablet is a drive.

Seven friends, P, Q, R, S, T, U, and V, are sitting around a circular table. All are facing the center of the table. Only R is sitting between Q and S. Only T is sitting between P and V. V is sitting third to the right of Q. V is third to the left of U. Who is sitting to the immediate right of R?

Based on the given statement, two conclusions are drawn. Find out which conclusion is true based on the statement.

Statement:

Z > R > Y > P = Q = N < S

Conclusions:

I. P > S

II. Z < Q

The graph and the table below show the marks obtained by three persons, A, B, and C, in three tests: Test 1, Test 2, and Test 3. If the maximum marks for both Test 1 and Test 2 are 80, and the maximum marks for Test 3 are 100, then how much percentage has A scored more than C considering the performance on all three tests?

image.png

The following chart shows the numbers of insurance policies sold by five salespersons named P, Q, R, S, and T. What is the percentage share of insurance policies sold by Q in the total insurance policies sold by all five salespersons?

image.png

In the given letter-cluster pairs, the first letter-cluster is related to the second letter-cluster following a certain logic. Study the pairs carefully, and from the options, select the pair that follows the same logic.

COWBOY : WOCYOB

TANGLE : NATELG

Which of the following schemes is the most beneficial for a customer?

Scheme 1: Buy 5 get 3 free

Scheme 2: Buy 5 get 6

Scheme 3: Two successive discounts of 10% and 5%

Select the set in which the numbers are related in the same way as the following sets.

(NOTE : Operations should be performed on the whole numbers, without breaking down the numbers info its

constituent digits. E.g. 13 — Operations on 13 such as adding /deleting/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)

(12,15,18)

(45,35,25)

Express 0.420 as a fraction in the form of p/q, where p and q are integers and q ≠ 0.
Which of the following numbers will replace the question mark (?) in the given series: 124, 129, 136, 145, 156, ?
A textbook has a total of 892 pages. It is divided into two parts. The second part of the book has 52 pages less than the first part. How many pages are there in the second part of the book?
When three parallel lines are cut by two transversals and the intercepts made by the first transversal are in the ratio 3 : 4, then the intercepts made by the second transversal are in the ratio:

In this question, a group of numbers/symbols is coded using letters asper the table given below and the conditions which follow. The correct combination of codes following the conditions is your answer.

image.png

Conditions:

(i) I the first two elements are numbers and the last is a symbol. theninterchange the codes for the second mumber and

the last symbol.

(ii) TF the second element is a symbol and the last is a symbol, then allthe symbols are 1o be coded as C.

(i) If the question has any Number which is immediately preceded by a prime number, then interchange the codes of

the first and last Number appearing in the question

Study the given letter, symbol series and answer the question that follows.

# 91@4*7^53#91<54@3S#2*6!42&9<36#2%2@7

If all even numbers in the given series are replaced with a number which is prime and even, how many numbers are there in the resultant series which are immediately preceded by a prime number and immediately followed by a symbol?

In a certain code language, 'FUEL' is written as '50' and 'JEER' is written as'44'. How will 'FARE' be written in that language?
If '+' means '-', '-' means '×', '×' means '÷', and '-' means '+', what will come in place of the question mark (?) in the following equation? 16 + 4 - 8 + 3 × 3 = ?
If 2 is added to each odd digit and 1 is subtracted from each even digit inthe number 34135278, what will be the sum of the digits that are third from the Left and third from the right?
Which of the following terms will replace the question mark (?) in the given series to make it logically complete? UCK-4, WFO-9, YIS-19, ALW-39, ?

Study the given arrangement carefully and answer the question that follows.

image.png

How many such numbers are there in the above arrangement each of which is immediately followed by a symbol and also immediately preceded by a symbol?

The mean of 36 numbers was found as 42. Later on, it was determined that a number 47 was misread as 41. Find the correct mean of the given numbers (rounded off to two decimal places).

The rectangle represents students, the circle represents girls, the oval represents arts stream, and the triangle represents sports. The numbers in different sections indicate the number of persons. How many girl students have taken arts stream and do NOT play sports, and what is the total number of students who play sports but are NOT girls and have taken arts stream?

image.png

A is twice as old as B. B is 1/3 as old as C. The sum of ages of A, B, and C is42 years. Find the sum of the ages of A and B.
image.png
"The LCM of 48, 72, and another number x is 576. Among the values given below, which one can be the value of x?
Suneet walked 10 m towards the north, then he turned left and walked 11 m, then from there he turned right and walked 13 m, and then he turned right again and walked 25 m. In which direction is Suneet facing now? (All turns are 90 degree turns only)
If 15 March 2022 was a Tuesday, what day of the week was 15 March 2020?
S, T, U, V, W and X live on six different floors of the same building. The lowermost floor in the building is numbered 1. the floor above it is mumbered 2, and so on till the topmost floor is numbered 6. V lives on the lowermost floor. X and U each live on an even numbered floor. T lives exactly between U and W. W lives on floor number 2. Who lives on floor number 5?

Consider the below statements and identify the correct answer.

  1. Statement-I: If a substance loses oxygen during a reaction, it is said to be reduced.
  2. Statement-II: If a substance gains hydrogen during a reaction, it is said to be reduced.
    In March 2022, which state has become the first to start Air Health Service in rural areas?
    image.png

    2023 മെയ് 1ന് കൊളംബിയയിലെ ആമേസാൺ വനമഖലയിൽ തകർന്നു വീണ് 4 കുട്ടികൾ അത്ഭുതകരമായി രക്ഷപെട്ട വിമാനം ഏത് വിഭാഗത്തിൽപ്പെടുന്നു?
    Who among the following is considered as the founder of Islam?
    image.png