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Given series is 12, 17, 23, 31, 42, ?

The pattern followed is:

∴ the number that will come in place of ? will be 57

Hence, the correct answer is "57".

Solution-

Answer : 3). YADJ

1. A +2 → C+3 → F+5 → K
2. M+2 → O+3 → R+5 → W
3. Y+2 → A+3 → D**+6** → J
4. J+2 → L+3 → O+5 →T

Logic-

• In option 3. D+6 wil be repleced by D+5→I
• So option 3 will be the right answer

Solution-

• The mRNA-1273 vaccine is a lipid nanoparticle-encapsulated mRNA-based vaccine that encodes the prefusion stabilized full-length spike protein of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes COVID-19.
• Modern COVID-19 Vaccine is a messenger RNA (mRNA) based vaccine.
• The efficacy shown in clinical trials in participants who received the full series of vaccines (2 doses) and had negative baseline SARS-CoV-2 status was approximately 94% based on a median follow-up of 9 weeks.
• The data reviewed at this time support the conclusion that the known and potential benefits of the mRNA-1273 vaccine outweigh the known and potential risks.

Additional Information

• On August 23, 2021, the FDA announced the first approval of a COVID-19 vaccine. The vaccine is known as the Pfizer-BioNTech COVID-19 Vaccine, and the vaccine approved for the prevention of COVID-19 in individuals 12 years of age and older is marketed as Comirnaty.

Solution-

Answer: 4). 1,34,100

Explanation-

The average income of R1 & R2 = 99,500 Total income of (R1+R2)

= 99500 × 2=1,99,000 →(1) The avg. income of R2 & R3 = 1,15,600.

Total income of ( R2 + R3) =1,15,600×2=2,31,200→(2)

The average income of R3 & R1 = 81,000

Total income of ( R3 + R1) = 81,000×2=1,62,000→(3)

(1)+(2)+(3)……………..

2(R1+R2+R3) = (1,99,000 + 2,31,200 +1,62,000)= 5,92,200

( R1+R2+R3)= 5,92,200 /2 = 2,96,100

The monthly income of R2= (R1+R2+R3)-(R3+R1) R2 = 2,96,100 – 1,62,000 = 1,34,100/-

Solution:

           A(-) ← (wife)← B(+) 

                                    ↑

                                (Father)

                                    ↑

                               (-) C →(sister)→D(-)

                                                          ↑

                                                    (Mother)

                                                          ↑

                                                          E(+)

                                                          ↑

                                                   ( Father)

                                                          ↑

                                                          F

C is the maternal aunt of E.

Solution-

• The Compensatory Afforestation Fund Management and Planning Authority (CAMPA) is meant to promote afforestation and regeneration activities to compensate for forest land diverted to non-forest uses.

Explanation

The National CAMPA Advisory Council has been set up as per the order of the Hon'ble Supreme Court with the following mandate:

• State to lay down broad guidelines for CAMPA.
• To facilitate scientific, technical, and other assistance required by the State CAMPA.
• To make recommendations to the State CAMPA on the basis of a review of their plans and programs.
• To provide a mechanism to the State CAMPAs to resolve inter-State or Centre-State character issues.

Solution-

• The smell of soil is due to the smell of two small molecules produced by tiny organisms.
• These small molecules are known as geosmin and 2-methylisoborneol (MIB).
• These compounds are mostly produced by bacteria belonging to the Streptomyces genus. In this regard, it is worth remembering that most of the antibiotics we use are produced by streptomycetes.
• In the present study, an actinomycete also known as Streptomyces.
• Actinomycetes are thread-like filamentous bacteria that typically grow in warm and moist soil. It has many other habitats including the water environment or animal bodies; However, the soil is its main habitat.

Explanation-

• A Petri dish with colonies of Streptomyces and the structures of the two compounds is shown in the figure to the right.
• The smell of these compounds can reduce the quality of drinking water.
• Geosmin and MIB have also been found to reduce fish quality in freshwater aquaculture as odour enters and accumulates in the fish, reducing commercial value.
• Humans can smell concentrations as low as 10 parts per trillion of geosmin and MIB in water.
• The characteristic odour of soil was first investigated by Berthelot in 1891.

Solution-

• LANs can be connected by a bridge that works in the data link layer.
• Bridges operate at the data link layer and can be used to connect LANs.
• A bridge is a computer network device that interconnects with other bridge networks that use the same protocol.
• Bridge devices operate at the data link layer of the Open System Interconnect (OSI) model, linking two different networks together and providing communication between them.

Additional Information

• A gateway is networking hardware or software used in telecommunications networks that allow data to flow from one discrete network to another.
• In telecommunications, a repeater is an electronic device that receives a signal and retransmits it.
• Router computers receive and send data over the network.

Solution:-

• Buffer overflow is a software coding error or vulnerability that hackers can exploit to gain unauthorized access to corporate systems.
• A buffer overflow condition exists when a program attempts to insert more data into a buffer, or when a program tries to insert data into a memory area before the buffer. In this case, a buffer is a sequential block of memory allocated to contain anything from a character string to an array of integers.
• Writing outside the bounds of a block of allocated memory can result in data corruption, program crashes, or the execution of malicious code.

Additional Information

• Buffer overflow is probably the best-known form of software security vulnerability.
• Most software developers know what a buffer overflow vulnerability is, but buffer overflow attacks are still fairly common against both legacy and newly developed applications.
• Part of the problem is due to the different ways buffer overflows occur, and part is due to the error-prone techniques often used to prevent them.

Solution:

• Let the speed of two trucks is V1 & the speed of the Van be V2.
• Time= distance/ speed

According to question

In 1^st condition →240/v1 + 480/v2 =14hrs

In 2^nd condition → 320/v1 + 400/v2 = 14hrs & 40min

1^st condition ÷ 2^nd condition

V2 + 2V1 / 4V2 + 5V1 = 7/22

22V2 + 44V1 = 28V2 + 35V1

→ 9V1 = 6V2 V1 : V2 = 2 : 3