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What will be the product of thousand and units digit of that number ?

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A four digit number having all digit successive when substracted by the number formed by using all the digits in reverse pattern (ie reverse of xyz is zyx) gives a four digit number. The sum of all digits of that number is 18.
What will be the product of thousand and units digit of that number ?

posted Oct 15, 2015 by Aastha Joshi

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1 Answer

+3 votes
 
Best answer

four digits are
9876
9876-6789= 3087
sum of digits is 18 = 3+0+8+7 = 18
so
product of thousand and units digit = 3*8 = 24

answer Dec 7, 2015 by Jaspalsingh Parmar



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0 votes

A five digit number is choosen in such a way that ten's place is one less than unit's place, hundred's place is one less than ten's place and similarly the other digits. Sum of all the digits of a number obtained by adding that choosen number and the number formed by reversing its digit is 40.

What will be the product of all the digit of the choosen number ?

+1 vote

A four digit number is such that the product of all of its digits is 126. The sum of all the digits is equal to the 2 digit number formed by using thousands digit and tens digit (Thousand digit in tens place & ten digit in units place) which in turn is equal to 19.

Then find out the difference of units and thousand place numbers (given that this difference is positive)

+2 votes

A six digit number has the maximum number of possibilities of perfect square as given below
1. First digit is a perfect square
2. Second digit is a perfect square
3. Third digit is a perfect square
4. Number formed by first and second digit in order is perfect square
5. Number formed by third and fourth digit in order is perfect square
6. Number formed by fifth and sixth digit in order is perfect square
7.Number formed by last three digit in order is perfect square
Here sixth digit means the units place.
All the digits in the number are different and non zero.

What will be the product of all the six digit ?

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