(13 votes, average: 4.23 out of 5)Number Puzzle #155
11×11=171
12×12=220
13×13=251
14×14=304
15×15=?
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11×11 = 121 = 171 in base 8
read here on how to convert one number from 10 base to another base
by following that:
121/8 = 15 R 1
15/8 = 1 R 7
read here on how to convert one number from 10 base to another base
by following that:
121/8 = 15 R 1
15/8 = 1 R 7
= 1*8^2 + 7*8^1 + 1*8^0 = 171
thus 15×15 = 225
225/8 = 28 R 1
28/8 = 3 R 4
= 3*8^2 + 4*8^1 + 1*8^0 = 341
OR you can try this online tool to convert the base
Answer courtsey: George Georgiev
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Ya d answer is 339.
Congrats raju u r d 1st…..!👍
Hi guys, the answer is not 339 🙂 It’s playing with the number bases.
Convert all answers from 8th base to 10th base and you get the right multiplication result that will be when you normally multiply the numbers.
Thus:
15*15 = 225 in 10th base, 341 in 8th base.
The answer is 341
he answer is 339. they are alternately adding 26 and 6 after initializing with 50.
Just look at this.
11*11=> 121+50=171
12*12=> 144+50+26=220
13*13=> 169+50+26+6=251
14*14=> 196+50+26+6+26=304
So now will add another 6 thus,
15*15=> 225+50+26+6+26+6=339
THAT’s IT….. Enjoyyy (Y)