Tricky Number Tour

Number Theory Level 2

If f(5,3,2)=151022

f(9,2,4)=183652

and f(8,6,3)=482466

then f(5,4,5)=?

252064 202589 202541 202515

Deepa Indu by Deepa Indu , 22, India

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2 solutions

Leomar Nogot
Mar 17, 2015

5 + 3 + 2 = 151022 to get 15, multiply the 1st number and the 2nd number to get 10, multiply the 1st number and the 3rd number to get 22, add 15 and 10, and then subtract the 2nd number from this sum which is 15 + 10 = 25, 25 - 3 = 22 

   this is also evident in the next two equations, for the unknown, applying the pattern will result to this:

5 + 4 + 5 = 202541 multiplying 1st and 2nd, (5)(4) = 20 multiplying 1st and 3rd, (5)(5) = 25 adding 20 and 25, then subtracting 2nd number from this we have, 20 + 25 = 45, 45 - 4 = 41

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Deepa Indu
Mar 18, 2015

f(5,4,5)=202541 => 5*4=20 (1st two digits)

5*5=25 (next two digits)

20+25=45-4 =41 (last two digits).

For the first two digits, multiply the first and the second number.

For the next two digits, multiply the first and the last number.

For the last two digits, subtract the second number from the sum of first two digits and the next two digits.

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