Скачать или смотреть Number Systems | CAT | IPMAT | GMAT | Examinations | Aptitude Tests | by Tanishk Yadav

The focus of the playlist is to help students with various concepts they might need for various exams and also in day to day problems.

In this video we dealt with Number Systems.

NOTES & PAPER : https://drive.google.com/file/d/109ym...

Suggested Books :
Arihant Fastrack : https://amzn.to/3NO6o9F
Quantitative Aptitude by RS Agarwal : https://amzn.to/3IpfGrh


00:00:00-00:13:27 - Introduction to Number System

00:13:27-00:18:00 - In a four-digit number, the sum of the first 2 digits is equal to that of the last 2 digits. The sum of the first and last digits is equal to the third digit. Finally, the sum of the second and fourth digits is twice the sum of the other 2 digits. What is the third digit of the number?

00:18:00-00:19:38 - Anita had to do a multiplication. Instead of taking 35 as one of the multipliers, she took 53. As a result, the product went up by 540. What is the new product?

00:19:38-00:25:16 - In some code, letter a, b, c, d and e represent numbers 2, 4, 5, 6 and 10. We just do not know which letter represents what number.

00:25:16-00:28:12 - Let S be the set of prime numbers greater than or equal to 2 and less than 100. Multiply all the elements of S. With how many zeroes will the product end?

00:28:12-00:29:32 - If a book has 252 pages, how many digits have been used to number the pages?

00:29:32-00:31:50 - The number of positive integers n in the range 12 ≤ n ≤ 40 such that the product (n - 1) (n - 2) (n - 3)…3×2×1 is not divisible by n is

00:31:50-00:34:56 - If x and y are positive integers and x2–y2=101, find the value of x2 + y2.

00:34:56-00:37:30 - If [√x]=5 and [√y]=6, where x and y are natural numbers, what can be the greatest possible value of x+y ?

00:37:30-00:42:35 - For an odd number n, find the highest number that always divides n × (n2 – 1)?

00:42:35-00:45:48 - On writing first 252 positive integers in a straight line, how many times digit 4 appears?

00:45:48-00:48:35 - What is the value of [√1]+[√2]+[√3]+⋯+[√49]+[√50] where [x] denotes the greatest integer function?

00:48:35-00:49:59 - For which integer n is 28 + 211 + 2n is a perfect square?

00:49:59-00:54:26 - Let ABCDE be a five-digit number where A, B, C, D, and E are the digits. If, ABCDE×9 = 1AAA0E, what is the value of A+B+C+D+E?

00:54:26-00:58:15 - Let S be a set of positive integers such that every element n of S satisfies the conditions
I. 1000 ≤ n ≤1200
II. Every digit in ‘n’ is odd
Then how many elements of S are divisible by 3?

00:58:15-01:00:33 - The sum of four consecutive two-digit odd numbers, when divided by 10, becomes a perfect square. Which of the following can possibly be one of these four numbers?

01:00:33-01:03:10 - The number of employees in ScienceWaale Co. is a prime number and is less than 300. The ratio of the number of employees who are graduates and above, to that of employees who are not, can possibly be:

01:03:10-01:04:20 - The value of the numeral MDCCLXXXVII is

01:04:20-01:01:45 - The value of the numeral MCMXCIX is

01:04:45-01:05:20 - Which of the following represent the numeral for 1995?

01:05:20 - Outro

Answers to the questions
1. A)
2. A)
3. B)
4. C)
5. B)
6. B)
7. B)
8. B)
9. C)
10. C)
11. B)
12. B)
13. A)
14. A)
15. C)
16. C)
17. B)
18. C)
19. B)
20. B)