prove that 1 + 1 = 1. use any logic, any method,any
algorithm.. (its not a binary addition or logical OR gate).

Answers were Sorted based on User's Feedback



prove that 1 + 1 = 1. use any logic, any method,any algorithm.. (its not a binary addition or logi..

Answer / ganapa

Say a=1 and b=1

Now a*a=a*b

a*a - b*b = a*b - b*b

a^2 - b^2 = b(a-b)

(a+b)(a-b) = b(a-b)

a+b = b

1+1 = 1

Is This Answer Correct ?    53 Yes 15 No

prove that 1 + 1 = 1. use any logic, any method,any algorithm.. (its not a binary addition or logi..

Answer / rajesh

the above method is true only when the divisor is non zero.
so the problem is absurd.
(a+b)(a-b)=b (a-b)
we can not divide (a-b) on both sides since it is zero
that is why we cannot obtain a+b=b
i hope anyone can understand what i am trying..right??

Is This Answer Correct ?    27 Yes 0 No

prove that 1 + 1 = 1. use any logic, any method,any algorithm.. (its not a binary addition or logi..

Answer / dhanwin

True method as described above

Is This Answer Correct ?    8 Yes 3 No

prove that 1 + 1 = 1. use any logic, any method,any algorithm.. (its not a binary addition or logi..

Answer / bharathi kannan

antilog of 1 is 0. Not 1

Is This Answer Correct ?    0 Yes 0 No

prove that 1 + 1 = 1. use any logic, any method,any algorithm.. (its not a binary addition or logi..

Answer / breeze-dhanasekaran

1+1/2=1

Is This Answer Correct ?    1 Yes 2 No

prove that 1 + 1 = 1. use any logic, any method,any algorithm.. (its not a binary addition or logi..

Answer / priyanka

1! + 1! =1.

Is This Answer Correct ?    0 Yes 1 No

prove that 1 + 1 = 1. use any logic, any method,any algorithm.. (its not a binary addition or logi..

Answer / r.prakash

log1=log1
log (1*1) = log1
log1 + log1 = log 1
take anti log on both sides
now we get,
1+1=1

Is This Answer Correct ?    6 Yes 12 No

Post New Answer

More Puzzles Interview Questions

What is the smallest number which when divided by 10 leaves a remainder of 9, when divided by 9 leaves a remainder of 8, when divided by 8 leaves a remainder of 7, when divided by 7 leaves a remainder of 6 and so on until when divided by 2 leaves a remainder of 1?

3 Answers   Banking, BSP,


Pinto says, "The horse is not Black." Sandy says, "The horse is either Brown or Grey." Andy says, "The horse is Brown." At least one is telling truth and at least one is lying. Can you tell the color of the horse?

3 Answers  


There were two men standing on a street. The one says to the other, "I have 3 daughters, the product of their ages is 36. What is the age of the OLDEST daughter?" The second guy says, "I need more information." So, the first guy says, "The sum of their ages is equal to the address of the house across the street." The second guy looks at the address and says, "I still need more information." So, the first guy says, "My oldest daughter wears a red dress."

3 Answers  


A cow is standing 5 feet from the middle of the bridge .A train is at a distance of 2 times length of the bridge from direction in which cow is nearer to end of the bridge is coming at a speed of 90 miles/hour.If cow moves towards train it will be saved by 1 foot.If cow moves away from train it will be hit by three inches of cow (i)Find length of bridge (ii)Find cows speed

1 Answers   eLitmus, Infosys, TCS,


In how many iterations can we find one coin that is heavier than the others out of 8 coins?and how ?please reply

6 Answers   Symphony,






there are 5 ppl's in a circle all must wear hat either white or black 1st condition: atleast 2 must wear white 2nd condition: atleast 2 must wear black 3rd: they should not talk each with other Question: How they come to know which colour of hat they are wearing

5 Answers  


Substitute digits for the letters to make the following subtraction problem true. S A N T A - C L A U S ----------------- X M A S Note that the leftmost letter can't be zero in any word. Also, there must be a one-to-one mapping between digits and letters. e.g. if you substitute 3 for the letter M, no other letter can be 3 and all other M in the puzzle must be 3.

1 Answers  


Given the following facts: 1. Dinesh is younger than Farukh and older than Gurmit. 2. Jatin is younger than Chandu and older than Eshrat. 3. Amit is younger than Irfan and older than Chandu. 4. Farukh is younger than Bhavin and older than Hemant. 5. Irfan is younger than Gurmit and older than Jatin. 6. Hemant is older than Gurmit. Who is the Youngest?

1 Answers  


there are 2 hour glass. one is 13min hour glass. another is 8min hour glass. u need to stop a button exactl aftr 18min..how do u calculate when 18min is passed?

3 Answers   Exilant,


In the middle of the confounded desert, there is the lost city of "Ash". To reach it, I will have to travel overland by foot from the coast. On a trek like this, each person can only carry enough rations for five days and the farthest we can travel in one day is 30 miles. Also, the city is 120 miles from the starting point. What I am trying to figure out is the fewest number of persons, including myself, that I will need in our Group so that I can reach the city, stay overnight, and then return to the coast without running out of supplies. How many persons (including myself) will I need to accomplish this mission?

2 Answers  


how to draw a rectangle using 3 lines?

9 Answers   CMC, ICAD, MAHINDRA, TATA, TCS,


Sachin, Dravid and Ganguly played in a Cricket match between India and England. ? None of them scored more than 99 runs. ? If you add the digits of the runs scored by Sachin to his own score, you will get the runs scored by Dravid. ? If you reverse the digits of the runs scored by Dravid, you will get the runs scored by Ganguly. ? The total runs scored by them is 240. Can you figure out their individual scores?

5 Answers  


Categories