Hi,

Check this thread:

http://www.pagalguy.com/forum/quantitative-questions-and-answers/83384-official-quant-thread-cat-2012-a-71.html#post3580913

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In a four digit number, the sum of the digits in the thousands and tens is equals to 4, the sum of the digits in the hundreds and the untis is 15, and the digit of the units exceeds by 7 the digit of the thousands. among all the numbers satisfying these conditions, find the number the sum of the product of whose digit of the thousands by the digit of the units and the product of the digit of hundreds by that of the tens assumes the least value.

A) 4708 B) 1738 C) 2629 D)1812 E)none of these.

option b

1738

In a four digit number, the sum of the digits in the thousands and tens is equals to 4, the sum of the digits in the hundreds and the untis is 15, and the digit of the units exceeds by 7 the digit of the thousands. among all the numbers satisfying these conditions, find the number the sum of the product of whose digit of the thousands by the digit of the units and the product of the digit of hundreds by that of the tens assumes the least value.

A) 4708 B) 1738 C) 2629 D)1812 E)none of these.