What is the value of 9+4+7?
Answer : 366329
PROCESS-
a+b+c
First 2 digits = a*b
Next 2 digits = c*a
Last 2 digits = Reverse of (((a*b)+(a*c))-c)
Solution-
3+5+6
First 2 digits = a*b = 15
Next 2 digits = c*a = 18
Last 2 digits = Reverse of (((a*b)+(a*c))-c) = Reverse(15+18-6) = Reverse(27) = 72
Final value 151872
Similarly,
For Given Question –
9+4+7
First 2 digit = 36
Next 2 Digit = 63
Last Digits = 29
So, Solution – 366329
Nice. The first four digits were easy. An alternative for the last two digits is:
11a – 16b + 7c + 77
but that gives 161 for 9+4+7. While this answer is consistent, it’s inelegant and unsatisfactory:
x = 10000ab + 100ac + 11a -16b + 7c + 77
It yields 9 + 4 + 7 = 366461
So while 366461 is *an* answer, it is not the best answer.
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