Challenger App

No.1 PSC Learning App

1M+ Downloads
Which of the following numbers will replace the question mark (?) in the given series: 9, 10, 18, 45, 109, ?
Select the set in which the numbers are related in the same way as are the numbers in the following set: (15, 41, 4) (19, 71, 5).
What is the total number of shells involved in the electronic configuration of carbon?
How many such pairs of letters are there in the word DAUGHTER (in both forward and backward directions) that have as many letters between them in the word as there are in the English alphabetical order?
Who prepared the first estimates of the national income of India in 1876?
John bought a laptop at a 2% discount on the marked price. If he paid₹23,725 for the laptop, what was its marked price?
According to data from the Centre for Monitoring the Indian Economy, which state witnessed the highest unemployment rate in January 2022?
The greatest possible length that can be used to measure exactly the lengths 5 m 25 cm, 7 m 35 cm, and 4 m 90 cm is:
Any reaction that produces an insoluble precipitate can be called a:

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) If the second element is an odd number and the last element is aneven number, the codes for these two (the second and the last elements)are to be interchanged.

(ii) If the third element is an even number and the fifth element is asymbol, the codes for these two (the third and the fifth elements) are tobe interchanged.

(iii) If the fifth element is a symbol and the sixth element is also a symbol,both these elements (the fifth and the sixth elements) are to be coded as R.

Number/Symbol: E 7 5 % & 4 % 8

A given resistance R is cut into 2 equal parts. The resistance of each part is?
Find the simple interest on ₹2,000 at 8.25% per annum for the period from7 February 2022 to 20 April 2022.
The value of 27 + 3 - 27 × 0 + 1 =
Article 279A is related to which of the following constitutional bodies?
In May 2022, which of the following state Chief Ministers, Basavaraj Bommai, launched a new health and wellness scheme app named "AAYU"?
For outstanding contribution in which of the following sports did T. P. Ouseph win the Dronacharya Award in 2021?

The roots of the equation ax2+bx+c=0ax^2+ bx + c = 0 are equal if:

P, Q, R, S, T, and U are six giraffes in a jungle, each with a different height. S is taller than Q. P is taller than R. S is shorter than T. Q is taller than P but shorter than T. T is shorter than U. Which of the six giraffes is the shortest?
image.png

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

Statements:

All computers are markers.

All erasers are markers.

All pens are erasers.

Conclusions:

I. No pen is a computer.

II. Some erasers are computers.

Soil erosion is one of the major threats to the environment. Which of the following can help to prevent erosion of soil?
If 6, 18, 39, and x are in proportion, then find the value of x.
Sandhya Gurung received the Dronacharya Award, 2021, for coaching in the field of?
Five friends A, S, D, F, and G took admission in a coaching institute inconsecutive months of the same calendar year. A took admission in May. Only D took admission between F and S, while G took admission exactly one month after A. F was the last one to take admission. In which month did D take admission?
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.