Question Bank  Number Theory  Shashank Prabhu, CAT 100 Percentiler

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@shashank_prabhu 26*51=1326

@shashank_prabhu 157

@shashank_prabhu Which of the following divides 144^2 + 169^2 + 144*169?
Not getting answer

@shashank_prabhu
let 2 numbers are 'ab' and 'cd', such that ab>cd.
abcd(abcd)=5481
100 * ab+cdab+cd=5481
99 * ab+2 * cd=548199*ab and 5481 are multiples of 9, hence cd must be a multiple of 9.
At cd=18, we get ab=55
Sum of the two 2digit numbers= 55+18=73