Untitled Deck

Question 2

What is 1 Hundred in the Indian Number System?

Answer 2

1 Hundred (same in both systems)

Question 3

What is 1 Thousand in the Indian Number System?

Answer 3

1 Thousand (same in both systems)

Question 4

What is 1 Lakh in the International Number System?

Answer 4

100 Thousand (100,000)

Question 5

What is 1 Million in Indian Number System?

Answer 5

10 Lakh or 0.1 Crore

Question 6

What is 1 Crore in the International Number System?

Answer 6

10 Million (10,000,000)

Question 7

What is 1 Billion in Indian terms?

Answer 7

100 Crore or 1 Arab

Question 8

What is 1 Arab in the International Number System?

Answer 8

1 Billion (1,000,000,000)

Question 9

What is 1 Trillion in Indian terms?

Answer 9

1 Lakh Crore or 1 Kharab

Question 10

What is 1 Kharab in the International Number System?

Answer 10

1 Trillion (1,000,000,000,000)

Question 11

What is 1 Quadrillion in Indian terms?

Answer 11

10 Lakh Kharab or 1 Neel

Question 12

1 Crore is equal to how many Million?

Answer 12

10 Million

Question 13

1 Million is equal to how many Crore?

Answer 13

0.1 Crore

Question 14

5 Million is equal to how many Crore?

Answer 14

0.5 Crore

Question 15

50 Million is equal to how many Crore?

Answer 15

5 Crore

Question 16

100 Million is equal to how many Crore?

Answer 16

10 Crore

Question 17

1 Billion is equal to how many Crore?

Answer 17

100 Crore

Question 18

10 Crore is equal to how many Million?

Answer 18

100 Million

Question 19

100 Crore is equal to what in the International System?

Answer 19

1 Billion

Question 20

1000 Crore is equal to what in the International System?

Answer 20

10 Billion

Question 21

1 Lakh Crore is equal to what in the International System?

Answer 21

1 Trillion

Question 22

What is 10⁰ called?

Answer 22

One (1)

Question 23

What is 10¹ called?

Answer 23

Ten (10)

Question 24

What is 10² called?

Answer 24

Hundred (100)

Question 25

What is 10³ called?

Answer 25

Thousand (1,000)

Question 26

What is 10⁴ called in the Indian System?

Answer 26

Ten Thousand (10,000)

Question 27

What is 10⁵ called in the Indian System?

Answer 27

Lakh (1,00,000)

Question 28

What is 10⁶ called in the International System?

Answer 28

Million (1,000,000)

Question 29

What is 10⁷ called in the Indian System?

Answer 29

Crore (1,00,00,000)

Question 30

What is 10⁹ called in the International System?

Answer 30

Billion (1,000,000,000)

Question 31

What is 10¹² called in the International System?

Answer 31

Trillion (1,000,000,000,000)

Question 32

What power of 10 is a Lakh?

Answer 32

10⁵

Question 33

What power of 10 is a Crore?

Answer 33

10⁷

Question 34

What power of 10 is a Million?

Answer 34

10⁶

Question 35

What power of 10 is a Billion?

Answer 35

10⁹

Question 36

What power of 10 is a Trillion?

Answer 36

10¹²

Question 37

Quick hack: Million to Crore conversion formula?

Answer 37

Multiply Million by 0.1 to get Crore

Question 38

Quick hack: Crore to Million conversion formula?

Answer 38

Multiply Crore by 10 to get Million

Question 39

Memory trick: What's the pattern in International Number System?

Answer 39

Every 3 zeros = new unit (Thousand, Million, Billion, Trillion)

Question 40

Memory trick: What's the pattern in Indian Number System?

Answer 40

After thousand, every 2 zeros = new unit (Lakh, Crore)

Question 41

How to quickly calculate 1 Billion users making 5 requests per day?

Answer 41

5 Billion requests per day ≈ 60,000 requests per second (divide by 86,400 seconds in a day)

Question 42

Quick estimation: If 1 user takes 100KB of storage, how much is needed for 10 million users?

Answer 42

1 TB (10M × 100KB = 1,000B KB = 1,000 GB = 1 TB)

Question 43

Hack for percentage to decimal conversion?

Answer 43

Move decimal point two places left (25% = 0.25)

Question 44

Quick mental math: Double a number each time, starting with 1, what's the 10th number?

Answer 44

2⁹ = 512 (1, 2, 4, 8, 16, 32, 64, 128, 256, 512)

Question 45

Quick approximation of 2¹⁰?

Answer 45

Approximately 1,000 (actual value: 1,024)

Question 46

Memory trick: Power of 2 sequence pattern?

Answer 46

2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096...

Question 47

How many Bytes in a Kilobyte (KB)?

Answer 47

1,024 Bytes = 1 KB (2¹⁰)

Question 48

How many KB in a Megabyte (MB)?

Answer 48

1,024 KB = 1 MB (2²⁰ bytes)

Question 49

How many MB in a Gigabyte (GB)?

Answer 49

1,024 MB = 1 GB (2³⁰ bytes)

Question 50

How many GB in a Terabyte (TB)?

Answer 50

1,024 GB = 1 TB (2⁴⁰ bytes)

Question 51

How many TB in a Petabyte (PB)?

Answer 51

1,024 TB = 1 PB (2⁵⁰ bytes)

Question 52

Quick approximation: 1 GB is approximately how many MB?

Answer 52

1,000 MB (actual: 1,024 MB)

Question 53

If a single HD movie is 4GB, how many movies can a 1TB drive hold?

Answer 53

Approximately 250 movies (1024 ÷ 4 = 256)

Question 54

If a text file with 1 page is about 2KB, how many pages in 1MB?

Answer 54

About 500 pages (1024 KB ÷ 2 KB = 512 pages)

Question 55

In system design, what's the typical storage size of a small profile image?

Answer 55

50-200 KB

Question 56

What is the approximate size of 1 million records with 1KB each?

Answer 56

1 GB (1M × 1KB = 1000M KB = 1000 GB = ~1 GB)

Question 57

A system with 1 million daily active users, each making 10 requests/day. Calculate QPS (Queries Per Second).

Answer 57

~116 QPS (1,000,000 × 10 ÷ 86,400)

Question 58

If each request generates 1KB of log data, how much storage is needed daily in the above system?

Answer 58

~10 GB per day (10M requests × 1KB)

Question 59

If a database can handle 1,000 QPS, how many users can it support if each user makes 20 requests/day?

Answer 59

~4.32 million users (1,000 × 86,400 ÷ 20)

Question 60

In a distributed system, if each node can handle 5,000 requests per second, how many nodes needed for 1 million QPS?

Answer 60

200 nodes (1,000,000 ÷ 5,000)

Question 61

If average response time is 100ms, and you need to handle 1,000 concurrent requests, calculate minimum threads needed.

Answer 61

100 threads (1,000 × 0.1)