a) write the largest four digit no using the digit 7,4,5,2.
b) write this four digit no in the reverse order. c) add these two four digit no obtained in (a) and (b).
d) what should be added to this sum obtained in (c) to get smallest five digit no?
e) subtract the no formed in (b) from the no formed in (a).
f) write the reverse order of this no obtained in (e).
g) add the no formed in (e) and(f).
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Here is the solution :
(a) : The largest number formed by any given digits is Descending order of the digits ,
=> Largest number Formed by 7,4,5,2 is 7542,
Therefore : (a) = 7542,
(b) : Reverse order of (a)
=> 2457,
Therefore : (b) = 2457,
(c) : Sum of (b) and (a),
=> 7542 + 2457,
=> 9999,
Therefore : (c) = 9999,
(d) : Smallest 5 digit number is 10,000
Now we need to add 10000-9999 to 9999 to get, Smallest 5 digit number !.
=> 10000 - 9999 = 1,
Therefore : (d) = 1,
(e) : We need to do (a) - (b)
=> 7542 - 2457
=> 5085,
Therefore : (e) = 5085,
(f) : Reverse order of (e)
=> 5805,
Therefore : (f) = 5805,
(g) : Addition of (f) and (e),
=> 5085 + 5805,
=> 10890
Therefore : (g) = 10890,
Therefore answers for all the above questions are :
(a) ------------ 7542,
(b) ------------ 2457,
(c) ------------ 9999,
(d) ------------ 1,
(e) ------------ 5085,
(f) ------------- 5805,
(g) ------------ 10890,
Hope you understand, Have a Great day :),
Thanking you, Bunti 360 !..
(a) : The largest number formed by any given digits is Descending order of the digits ,
=> Largest number Formed by 7,4,5,2 is 7542,
Therefore : (a) = 7542,
(b) : Reverse order of (a)
=> 2457,
Therefore : (b) = 2457,
(c) : Sum of (b) and (a),
=> 7542 + 2457,
=> 9999,
Therefore : (c) = 9999,
(d) : Smallest 5 digit number is 10,000
Now we need to add 10000-9999 to 9999 to get, Smallest 5 digit number !.
=> 10000 - 9999 = 1,
Therefore : (d) = 1,
(e) : We need to do (a) - (b)
=> 7542 - 2457
=> 5085,
Therefore : (e) = 5085,
(f) : Reverse order of (e)
=> 5805,
Therefore : (f) = 5805,
(g) : Addition of (f) and (e),
=> 5085 + 5805,
=> 10890
Therefore : (g) = 10890,
Therefore answers for all the above questions are :
(a) ------------ 7542,
(b) ------------ 2457,
(c) ------------ 9999,
(d) ------------ 1,
(e) ------------ 5085,
(f) ------------- 5805,
(g) ------------ 10890,
Hope you understand, Have a Great day :),
Thanking you, Bunti 360 !..
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