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Solution:

Answer- 18 years 6 months

Explanation-

Sum of ages of four casting directors = (18+19+17+15) = 69yrs

The sum of the ages of all four new added casting directors

= 69+ (15×4)months= 69+60/12

= 69 + 5 = 74 year

The average age of newly joined directors

= 74/4= 18.5 (18 years 6 month)

Answer: 1). Finland

Solution:

• According to the 6^th edition of Sustainable Development Report 2021 (SDR 2021) released by Sustainable Development Solution Network (SDSN), INDIA with a score of 60.1 has been placed at 120^th rank out of 165 countries. Finland topped the index followed by Sweden & Denmark.
• The report was authored by a group of authors led by Prof. Jeffrey Sachs, President of the Sustainable Development Solutions Network (SDSN), and tracks progress on the Global Goals for 2030.
• For 2021, the report is named "Sustainable Development Report 2021: Decade of Action for the Sustainable Development Goals". With only a decade left and the pandemic underway, countries need to adopt various sophisticated measures to achieve their global goals.

Correct Answer is : Option 2) Cache Memory

Important Points

Why Cache Memory is the Fastest Hardware Device:

Speed Hierarchy in Computer Hardware:

• Cache Memory (L1, L2, L3) → RAM → SSD/HDD → External Devices (USB, Printers, etc.)
• Cache is built directly into the CPU (or very close to it) and operates at near-CPU speeds.

Why Faster Than the Processor (CPU)?

The CPU itself is fast, but it relies on cache memory to avoid delays when fetching data.

Access Time Comparison:

L1 Cache: ~1 nanosecond (fastest)

CPU Registers: Faster, but not a "device" (they are part of the CPU).

RAM: ~100 nanoseconds

SSD/HDD: ~100,000–1,000,000 nanoseconds

Why Not Other Options?

• USB Port (Option 1): Much slower (limited by interface speed, e.g., USB 3.2 at ~20 Gbps).
• Laser Printer (Option 3): Extremely slow compared to internal components.
• Processor (Option 4): While the CPU is the "brain" of the computer, cache memory is faster in terms of data access speed.

Key Points

• Registers (inside the CPU) are technically faster than cache, but they are not considered a separate hardware device—they are part of the CPU itself.
• Cache is the fastest standalone hardware storage device in a computer.

Solution-

• To increase the efficiency of the microprocessor, the processor circuit is increased in the microprocessor, the core is a computing unit or chip installed in the microprocessor which shows the capability of the microprocessor.
• Processors are of different cores A processor with a single core is called a single core processor, a single core processor has a processor circuit. Single Core Processor hangs as soon as it is overloaded, so additional processor circuits are installed to increase the capacity of the microprocessor.
• A Hexa-core microprocessor refers to an integrated circuit that implements 6 independent physical execution units (called cores) on a single die.
• All processors of Intel are built on hyperthreading technology. If we talk in simple language, then Intel's processor can do two logical processes at the same time.
• The more cores the processor has, the more will be its processing power.
• Earlier most processors were single core but today all processors are multicore processors.

They are named on the basis of their number.

1. Dual Core Processor ( 2 cores - can do 2 logical processes at the same time)
2. Quad Core Processor ( 4 cores - can do 4 logical processes at the same time )
3. Hexa Core Processor (6 cores - can process 6 logical processes at the same time)
4. Octa Core Processor (8 cores - can do 8 logical processes at the same time)
5. Deca Core Processor (10 cores - can process 10 logical processes at the same time)

Answer: 4). 129.23

Solution:

Total cost price of all books= (120×20) + (150×30) + (100×15)

→ 2400 + 4500 + 1500 = 8400 /-

Total books =20 + 30 + 15 =65

Avg. cost price of a book = 8400 / 65 = Rs. 129.23 /-

Answer: 1). 17

Solution:

it’s a double series of question

1^st – 3 →5→9→? 2^nd - 6→10→14

In 1^st series— 3 + 2 =5

5 + 4 = 9   (2×2)

9 + 8 = 17  (4×2)

Solution-

• A bacteria called Lactobacillus is found in yoghurt.
• Lactobacillus are gram-positive lactic acid bacteria. They are found in rotting plants and milk products.
• When we heat milk at 30-40 °C and add some old curd to it, then the bacteria present in it start growing Lactobacillus acidophilus. These bacteria convert the lactose present in milk into lactic acid. The taste of curd is slightly bitter due to lactic acid.
• Lactobacillus is already present in unheated milk (fresh milk).
• These are good bacteria that are found in our stomach, genital and urinary. These bacteria do not make us sick.

Additional Information

• The digestive system of the stomach remains fine by eating curd. Yoghurt is very beneficial for good health.
• Curd protects us from heart diseases. Yoghurt lowers cholesterol in our bodies.
• Yoghurt increases our immunity power.
• Phosphorus and calcium are found in high amounts in curd, which is very beneficial for our teeth and bones.
• Curd is also used to cure skin diseases.
• If you have dandruff on your head, then you can get rid of dandruff by applying curd.
• They are also beneficial in reducing our weight.
• Eating curd removes mental stress and tension.

Solution-

• The National Optical Fiber Network (NOFN) BharatNet Project is an ambitious initiative to accelerate the broadband revolution.
• NOFN was envisioned as a super highway, through the creation of a robust mid-mile infrastructure, to enable gram panchayats to access broadband connectivity.

Important Points

• National Optical Fiber Network (NOFN) BharatNet Project 2021-22 aims to connect all 2,50,000 Gram Panchayats in the country and provide 100 Mbps connectivity to all Gram Panchayats (GPs).
• To achieve this, existing fibres from Public Sector Undertakings (BSNL, RailTel, and Power Grid) were used and incremental fibre was laid to connect Gram Panchayats where necessary.
• The dark fibre network thus created was lit by suitable technology, thereby creating sufficient bandwidth in the Gram Panchayats.
• In her finance speech on 01 February 2020, Finance Minister Nirmala Sitharaman stated that the government's vision and presentation are to provide virtual connectivity at the Gram Panchayat level to all public institutions.
• For the same, the government has proposed to allocate Rs 6000 crore for the 'Bharat Broadband Network' program in 2020-21 to hyperlink one lakh gram panchayats by offering fibre-to-home connections (FTTH).

Answer:2) 10km/hr

Solution:

let the speed of the runner, in the beginning, is = 5 (assumed)

After decreasing the speed is = 5 - 5×1/5 = 4

The ratio of speed is 5: 4

Distance is proportion to speed so the ratio of distance is also = 5: 4 Difference of distance in real is 40km and the ratio is 1

So the distance in biginning is = 40/1 × 5 = 200km

So the speed of the runner in the beginning = 200/ 16 = 12.5 km/hr & after decreasing the speed = 12.5 – 12.5×1/5 = 10km/hr answer

Answer: 4). EGJL

Solution:

1. U +2 → W +2 → Y +2 → A
2. F +2 → H +2 → J +2 → L
3. R +2 → T +2 →V +2 → X
4. E +2 → G +3→ J (I) +2 → L