In a four digit number the sum of first two digit is equal to that of the last two digits.The sum of the first and last digit is equal to the third digit . Finally the sum of the second and fourth digits is twice the sum of the other two digits what is the third digit of that number OPTIONS :- 1. FIVE 2.EIGHT 3.ONE 4. FOUR?

Answers

Om Prakash
Sep 06, 2021
Answer :

  When
 
, then
 
.
  When 
, then 

  But the value of 
 should be less than 
 as it is a single digit. 

  Value of 
 would be 
 which is the third digit of the required number.

Answer :⇒ Whend=4, thenc=5.⇒ Whend=8, thenc=10.⇒ But the value ofcshould be less than10as it is asingle digit.∴ Value ofcwould be5which is the third digit of the required number.
Answer :⇒ Whend=4, thenc=5.⇒ Whend=8, thenc=10.⇒ But the value ofcshould be less than10as it is asingle digit.∴ Value ofcwould be5which is the third digit of the required number.