If 1 2 3 = 45 (1 votes, average: 1.00 out of 5)August 7, 2014 by puzzler 9 Comments Number Puzzle #109 IF 1 2 3 = 452 3 3 = 643 2 1 = 398 4 0 = 72Then1 1 1 = ? Share on Whatsapp Share on Facebook Share on Twitter Share on Google+ Like us on Facebook

mugdha kelkar says August 9, 2014 at 10:13 pm but 840=71 which is given. And both answers are noy satisfying this point. Reply

puzzlersworld says August 10, 2014 at 7:40 am there was a typo in image description, corrected it, it is 840 = 72.. Reply

a says August 8, 2014 at 9:03 am Logic is : – twice of last 2 digits miuns left most digit. 123 = 2×23 – 1 = 46 – 1 = 45 233 = 2×33 – 2 = 66 – 2 = 64 321 = 2X21- 3 = 42 – 3 = 39 840 = 2X40 – 8 = 80 -8 = 72 So 111 = 2X11 – 1 = 22 -1 = 21 Reply

drsksoni says August 8, 2014 at 7:07 am Answer is 21 logic is as follows: (((number formed by second and third digit) – first digit) +number formed by second and third digit) (1). 1 2 3 [ ( 23 – 1 = 22 + 23 ) = 45 ] (2). 2 3 3 [ ( 33 – 2 = 31 + 33 ) = 64 ] (3). 3 2 1 [ ( 21 – 3 = 18 + 21 ) = 39 ] (4). 8 4 0 [ ( 40 – 8 = 32 + 40 ) = 72 ] Therefore (5). 1 1 1 [ ( 11 – 1 = 10 + 11) = 21 ] Reply

mugdha kelkar says

but 840=71 which is given. And both answers are noy satisfying this point.

puzzlersworld says

there was a typo in image description, corrected it, it is 840 = 72..

fivebee says

☻☺ lol, answers are NOY, lol ☺☻

a says

Logic is : – twice of last 2 digits miuns left most digit.

123 = 2×23 – 1 = 46 – 1 = 45

233 = 2×33 – 2 = 66 – 2 = 64

321 = 2X21- 3 = 42 – 3 = 39

840 = 2X40 – 8 = 80 -8 = 72

So

111 = 2X11 – 1 = 22 -1 = 21

puzzlersworld says

Simpler version of @drksoni solution… Thanks !!!

drsksoni says

Answer is 21

logic is as follows:

(((number formed by second and third digit) – first digit) +number formed by second and third digit)

(1). 1 2 3 [ ( 23 – 1 = 22 + 23 ) = 45 ]

(2). 2 3 3 [ ( 33 – 2 = 31 + 33 ) = 64 ]

(3). 3 2 1 [ ( 21 – 3 = 18 + 21 ) = 39 ]

(4). 8 4 0 [ ( 40 – 8 = 32 + 40 ) = 72 ]

Therefore

(5). 1 1 1 [ ( 11 – 1 = 10 + 11) = 21 ]

puzzlersworld says

You Cracked it !!!

drsksoni says

Thanks Sir.

rohan says

Sale khud hi dal ke khud hi answer kr rahe hai