What day will be 22^{nd} November 2020, If today is 20th November 2017 which is a Monday? {Please find the answer in a mathematical order. Please explain properly how to solve these questions which usually appears in olympiads}

4) Arun wanted to buy a soap. He has a five-rupee, 2 one-rupee coins and 4 half-rupee coins. Write in rupees what money he will get back.

MeritNation

The below question my mine is not being answered and it is being late... I know that the questions have a standard to me of 24-48 hours to be answered.

Question:Once a teacher of my school,asked me to tell a 3 or 4 or 5 digit number to him, he then asked me to multiply it with another 3 or 4 or 5 or 6 digit number and asked me to tell that to him after I would take out the product of the two numbers. Then he asked me to say the product in which all the digits would be there in there own places and only one digit I would not tell him which would be told as a (*) and will be hidden. And he in just a matter of 5 seconds, he told the missing digit. How we perform this trick? What is the trick behind this? Explain it with 2 examples. PLEASE...

LIKE: If "2465 x 5426 = 133750*0" and my teacher told me the the digit in place of the star symbol in just five seconds. HOW?

{I know that this is not related to the course at all, but for a general knowledge which would help me in olympiads... so I asked this and want to know this PLEASE...} ↵ ↵

Please don't say that it is a creative and enhancing skill. I just want my answer perfectly...

MeritNation

The below question my mine is not being answered and it is being late... I know that the questions have a standard to me of 24-48 hours to be answered.

Question :Once a teacher of my school,asked me to tell a 3 or 4 or 5 digit number to him, he then asked me to multiply it with another 3 or 4 or 5 or 6 digit number and asked me to tell that to him after I would take out the product of the two numbers. Then he asked me to say the product in which all the digits would be there in there own places and only one digit I would not tell him which would be told as a (*) and will be hidden. And he in just a matter of 5 seconds, he told the missing digit. How we perform this trick? What is the trick behind this? Explain it with 2 examples. PLEASE...

LIKE: If "2465 x 5426 = 133750*0" and my teacher told me the the digit in place of the star symbol in just five seconds. HOW?

{I know that this is not related to the course at all, but for a general knowledge which would help me in olympiads... so I asked this and want to know this PLEASE...} ↵ ↵

MeritNation

Once a teacher of my school,asked me to tell a 3 or 4 or 5 digit number to him, he then asked me to multiply it with another 3 or 4 or 5 or 6 digit number and asked me to tell that to him after I would take out the product of the two numbers. Then he asked me to say the product in which all the digits would be there in there own places and only one digit I would not tell him which would be told as a (*) and will be hidden. And he in just a matter of 5 seconds, he told the missing digit. How we perform this trick? What is the trick behind this? Explain it with 2 examples. PLEASE...

LIKE: If "2465 x 5426 = 133750*0" and my teacher told me the the digit in place of the star symbol in just five seconds. HOW?

{I know that this is not related to the course at all, but for a general knowledge which would help me in olympiads... so I asked this and want to know this PLEASE...}^{2}and bc = c^{2}, where bc is a two digit number. Find out the values ofa, bandc.{Please don't provide any web-link or any certified answer}&that of 8 pens and 5 pencils is 42.75 rupees, find the price of each of the pen and pencil separately.{Please don't provide any weblink or any certified answer}{Please don't provide any weblink or any certified answer}What day will be 22

^{nd}November 2020, If today is 20th November 2017 which is a Monday?{Please find the answer in a mathematical order. Please explain properly how to solve these questions which usually appears in olympiads}^{th}November 2017 which is a Monday. What day will be on 20^{th}November 2020?{Please find the answer in a mathematical order and manner. Please explain properly how to solve these questions which usually appears in olympiads}Experts,MeritNation

Varun Rawat sir had asked me to recheck the below question and to get back, so here I am ... again asking the same question with the necessary corrections:QUESTION:A number consists of 3 digits whose sum is 7. The digit at the units place is twice the digit at ten's place. If 297 is added to the number, the digits of the number are reversed. Find the number.

{Please don't provide any weblink or any certified answer ... Please give a answer with a proper explanation} Ashutosh Verma sir answer it if possible as soon as:

QUESTION:A number consists of 3 digits is 7. The digit at the units place is twice the digit at ten's place. If 297 is added to the number, the digits of the number are reversed. FInd the number.

{Please don't provide any weblink or any certified answer ... Please give a answer with a proper explanation}Find the missing digits in the following multiplication sum:

$3597\phantom{\rule{0ex}{0ex}}***\phantom{\rule{0ex}{0ex}}\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\phantom{\rule{0ex}{0ex}}****\phantom{\rule{0ex}{0ex}}****\phantom{\rule{0ex}{0ex}}****\phantom{\rule{0ex}{0ex}}\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\phantom{\rule{0ex}{0ex}}****541\phantom{\rule{0ex}{0ex}}\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

A two-digit number is such that if a decimal point is placed between its digits, the resulting number is one-quarter of the sum of its digits. What is the original number?

{Please don't provide any weblink or certified answer ... and solve the question to find the answer with proper & clear explanation}