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2020

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Recently Resolved Doubts

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A
AYUSHMAN
6 Jun 2026

Resolved in 1m

Question:

Given that $$2^{2a} + 4^b = 8^{5c}$$, where a, b and c are positive integers. What is the least possible value of b?

A

6

B

7

C

8

D

9

Doubt

no need to asnwer i got the answer thank you


A
Aniket
4 Jun 2026

Resolved in 1m

Question:

Which officer discusses Remedies and what is its rank?

A

P-4

B

S-1

C

U-7

D

V-5

Doubt

Hello,
My doubt is regarding solving method for Circular arrangements,
I use the line (thread) method, converting a circule into a single line, so is it okay to continue that method till last for CAT level difficulty, upto this set I am able to solve the questions by using the line method.

What would you suggest?


A
AYUSHMAN
5 Jun 2026

Resolved in 1m

Question:

There is a sentence that is missing in the paragraph below. Look at the paragraph and decide in which blank (option 1, 2, 3, or 4) the following sentence would best fit.

Sentence: From chaos comes order.

Passage: History is narratives…..1…..We seek to understand the past by determining and ordering ‘facts’; and from these narratives we hope to explain the decisions and processes which shape our existence…..2…..Perhaps we might even distill patterns and lessons to guide - but never to determine - our responses to the challenges faced today. History is the study of people, actions, decisions, interactions and behaviors…..3…..It is so compelling a subject because it encapsulates themes which expose the human condition in all of its guises and that resonate throughout time: power, weakness, corruption, tragedy, triumph…..4…..Nowhere are these themes clearer than in political history, still the necessary core of the field and the most meaningful of the myriad approaches to the study of history.

A

Option 1

B

Option 2

C

Option 3

D

Option 4

Doubt

why is 2 not the right fit?


A
AYUSHMAN
5 Jun 2026

Resolved in 1m

Question:

The four sentences (labelled 1, 2, 3, 4) below, when properly sequenced, would yield a coherent paragraph. Decide on the proper sequencing of the order of the sentences and key in the sequence of the four numbers as your answer:

1. The year 2016 was the warmest this region had experienced since 770 AD.

2. It was found that for the last two decades, Yellowstone National Park has been warming at its most intense rates in at least 1,250 years.

3. Tree rings can provide a variety of information about the climate and weather conditions a tree has experienced over the course of its lifetime.

4. A study, published in the journal Geophysical Research Letters, used data from tree rings to reconstruct more than a millennium of summer temperatures in the Yellowstone region.


Correct Answer: 3421

Doubt

So it's always like this nah generally first co dept then a study right?i thought first study then explaining it


A
AB
5 Jun 2026

Resolved in 1m

Question:

There are two barrels, first with 70 litres pure alcohol and second with 80 litres pure alcohol, in a bar. The barkeeper removes 10 litres of alcohol from the first barrel and replaces it with 20 litres of water. From the second, he removes 10 litres of alcohol and replaces it with 30 litres of water. He sells half of the solutions from both the barrels. The profit percentage earned on this transaction is denoted by ‘A’. After this, he pours 10 litres of solution from the second to the first barrel and 8 litres of solution from first to the second barrel, simultaneously. The profit percentage earned on selling solutions in first and second barrel is denoted by ‘B’ and ‘C’ respectively. Find the value of $$\frac{4A}{|B-C|}$$ if water is freely available. Assume the solutions are sold at the cost price of pure alcohol.

A

25

B

26.33

C

21

D

27

Doubt

The profit percentage earned on selling solutions in first and second barrel is denoted by ‘B’ and ‘C’ respectively.
here B should be complete profit from A ,not just after mixing


E
Eedulakanti
5 Jun 2026

Resolved in 1m

Question:

Which one of the following species is diamagnetic in nature?

A

He$$_2^+$$

B

H$$_2$$

C

H$$_2^+$$

D

H$$_2^-$$

Doubt

HOW YOU WILL TELL IT IS DIAMAGNETIC IN NATURE


J
Jhilmil
5 Jun 2026

Resolved in 1m

Question:

The four sentences (labelled 1, 2, 3, 4) given below, when properly sequenced would yield a coherent paragraph. Decide on the proper sequence of the order of the sentences and key in the sequence of the four numbers as your answer.
1. People with dyslexia have difficulty with print-reading, and people with autism spectrum disorder have difficulty with mind-reading.
2. An example of a lost cognitive instinct is mind-reading: our capacity to think of ourselves and others as having beliefs, desires, thoughts and feelings.
3. Mind-reading looks increasingly like literacy, a skill we know for sure is not in our genes, since scripts have been around for only 5,000-6,000 years.
4. Print-reading, like mind-reading varies across cultures, depends heavily on certain parts of the brain, and is subject to developmental disorders.


Correct Answer: 2341

Doubt

shouldnt the answer be 3412 why example is put at as the introductory sentence ?


M
Manvi
5 Jun 2026

Resolved in 1m

Question:

Which of the following is most opposite in meaning to the word given in bold as used in the passage? Mitigating  

A

Aggravating

B

Irritating

C

Annoying

D

Frustrating

E

Infuriating

Doubt

why aggravating


E
Eedulakanti
5 Jun 2026

Resolved in 1m

Question:

Although CN$$^-$$ ion and N$$_2$$ molecule are isoelectronic, yet N$$_2$$ molecule is chemically inert because of

A

presence of more number of electrons in bonding

B

lone bond energy orbitals

C

absence of bond polarity

D

uneven electron distribution.

Doubt

WHY THERE WAS ABSENSE OF BOND POLARITY


Vipul
5 Jun 2026

Resolved in 1m

Question:

$$f(2x + 3) = 4x^2 + 14x + 14$$
Find the value of $$f\left(\dfrac{1}{x}\right)$$.

A

$$\dfrac{2x^2+x+1}{x^2}$$

B

$$\dfrac{x^2+x+1}{x^2}$$

C

$$\dfrac{x^2+x+2}{x^2}$$

D

$$\dfrac{x^2+2x+1}{x^2}$$

Doubt

Hello (4x^2 + 12x + 9) + (2x+3)+2 , how did sir easily found out this . Is there any method ?


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