A five digit number is choosen in such a way that ten's place is one less than units's place, hundre

A M ANKIT KALLURAYA   9 years AGO

2[n+n-1+n-2+n-3+n-4]=4
n=6
=>6*5*4*3*2=720

Like? Yes (8) | No (6)  

Sanu Panji   9 years AGO

lets numbers are (x-2),(x-1),x,(x+1),(x+2)
sum is 5x
so 5x+5x= 40
x=4
digits are 2,3,4,5,6
product is 6!= 720

Like? Yes (1) | No   

Sameer Kulkarni   9 years AGO

Sum of the digits of the number is added twice which is given as 40,
means the addition of the digits of the given number is 20.
And the number which satisfies the given conditions is 23456, and the product of its digits is 720.

Like? Yes (1) | No   

Nupur   9 years AGO

2(x-4 + x-3 + x-2 + x-1 + x) = 40
x = 6

Product is 720

Like? Yes (1) | No   

Shanmugapriya.G   9 years AGO

twice the sum of all digit is 40,then we got unit digit as 6.
so product is 720.

Like? Yes (1) | No   

Hemant Pathak   9 years AGO

let unit digit is u then tens digit and others are respectively
u-1,u-2,u-3,u-4
sum of digits of no nd reverse no is 2(5u-10)
2(5u-10)=40
u=6
no is 23456.

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arush gupta   9 years AGO

ans the digit will be 23456 therefore the product o the digit will be 720

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RAKESH   9 years AGO

no. is 65432

product = 720

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Jitendra Kumar   9 years AGO

65432
on multiplication we get 720

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Ankan Biswas   9 years AGO

Let the units , tens , hundreds , thousands , ten thousands digit be x , x-1 , x-2 , x-3 and x-4 respectively
Given, sum of number and number obtained by reversing digits bis 40.
so, 2(x +x-1 +x-2 +x-3 +x-4) = 40
=> 2(5x-10)=40
=> x= 6.
so, the number is 23456
=> product = 2*3*4*5*6= 720.
Ans. 720 (3)

Like? Yes (1) | No   

Arjun Raina   9 years AGO

6+5+4+3+2=20
2+3+4+5+6=20
nd total =40
6*5*4*3*2=720

Like? Yes (1) | No   

Vaibhav Andge   9 years AGO

abcde and edcba are those no
there addition is 2(a+b+c+d+e)=40
i.e a+b+c+d+e=20
then acc to given condition,
let a=n then
n+n+1+n+2+n+3+n+4=20
n=2
and the no are 2,3,4,5,6
there multiplication is 720

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Paras Jain   9 years AGO

its 23456 so product = 720 Ans.

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anusha   9 years AGO

no is 23456
by product we get 720
for that take the unit place as x and proceed

Like? Yes (1) | No   

Prasanna J V   9 years AGO

2+3+4+5+6=20 .....and reversing it will get..,6+5+4+3+2=20.....
so 20+20=40..... and product of 6*5*4*3*2=720...

Like? Yes (1) | No   

Supriya Mondal   9 years AGO

The number will be 65432
So, product of its all digit will be=6*5*4*3*2=720
So,option 3)720 is the right answer

Like? Yes (5) | No (5)  

Pradyumna K S   9 years AGO

the given number is x-4'x-3'x-2'x-1'x
sum of all digits of a number and reverse of that number is
2(5x-10)=40
x=6
therefore the product of the Chosen number is
6*5*4*3*2=720

Like? Yes (5) | No (5)  

Deepak Kumar Sahu   9 years AGO

choosen number is 23456
sum of all digits is 20. so when we add this to the sum of all digit of reverse of choosen number then it will give 40.
product of all digits is 2*3*4*5*6=720

Like? Yes (3) | No (3)  

Ranjit Somisetty   9 years AGO

sum of 2 numbers to be 40; sum of digits is 20;
num will be 23456;
product of 2,3,4,5,6 is 6!=720

Like? Yes (1) | No (2)  

Deb Das   9 years AGO

the mininum digits 6,5,4,3,2
Therir sum-20,and in reverse order it is also 20
so
the product=6*5*4*3*2=720

Like? Yes (1) | No (2)  

ABHINAV PUSHPAM   9 years AGO

Required number is 2,3,4,5,6. Its product is 720. So option 3) is correct

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Devendra Marghade   9 years AGO

The number is 23456
So product of all the digits =2*3*4*5*6=720
So option 3) is correct

Like? Yes (1) | No (2)  

Anshul Garg   9 years AGO

According to question
Possible numbers are

12345
23456
34567
45678
56789

If we check for 2nd number it follows the given condition as the sum of number and reverse of it will give 88888. And summation of 5 8's is 40.

So answer is 2*3*4*5*6 = 720

Like? Yes (2) | No (3)  

Meenakshi   9 years AGO

According to the given condition, a five digit number is:23456

Product of these numbers:2*3*4*5*6=720

So,answer is option 3)

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Sravanthi   9 years AGO

number is 23456

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sravani   9 years AGO

number is 65432
Reverse of it is 23456
sum is 88888=8+8+8+8+8=40
product of digits=6*5*4*3*2=720.....

Like? Yes (1) | No (2)  

Ranajoy Roy   9 years AGO

if the unit place digit is X then the digit is
X-4 X-3 X-2 X-1 X
SUM= 5X-10

REVERSE NUMBER IS ALSO SAME SO,
2(5X-10)=40
=> X= 6
THE DIGIT IS,
23456
PRODUCT IS=720

Like? Yes (2) | No (3)  

satyam sharma   9 years AGO

answer is 3) 720

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Aman   9 years AGO

number is 23456
2x3x4x5x6 = 720

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krishna chandrika   9 years AGO

let the 5 digit number be
units place x
ones place x-1
tens place x-2
thousands place x-3
ten thousands place x-4
sum of all the digits and its reverse will be 10x-20
given that 10x-20=40
=>x=6
therefore s digit num is 23456
product is 2*3*4*5*6 =720

Like? Yes (1) | No (2)  

Ravi Bhushan Mahato   9 years AGO

number is 23456
so its product is 720

Like? Yes (1) | No (2)  

ganesh babu   9 years AGO

23456+65432=88888=5*8=40
2*3*4*5*6=720

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Preethi   9 years AGO

let u be the units digit.
so u u+1 u+2 u+3 u+4
u+4 u+3 u+2 u+1 u. +
__________________________
= 2u+4 2u+4 2u+4 2u+4 2u+4
= 40


hence u= 2
no is 65432
so product is 720

Like? Yes (1) | No (2)  

NISHI   9 years AGO

Here first i assume that unit place is x.then according to questn ten's place is x-l,similarly x-2,x-3,x-4..now add all this..we get 5x-10..so,x=6,finally my number is 23456...so product of number is 720...so my answer is option c.

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harvinder   9 years AGO

let digit be.

x-2 x-1 x x+1 x+2

reversing

x+2 x+1 x x-1 x-2

adding

10x = 40

x = 4

product = 2*3*4*5*6
=720

Like? Yes (1) | No (2)  

Sourabh Prasad   9 years AGO

Let digits of the number are |x-4|x-3|x-2|x-1|x|

Therefore, Sum of this and it's reverse digits = 40
(5x-10)+(5x-10) = 40
x= 6

Number is 23456
Product is 2*3*4*5*6
= 720

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MRITUNJAY   9 years AGO

2*3*4*5*6

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Vivek Vishal Anand   9 years AGO

6!

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RAUNAK   9 years AGO

The no obtained by adding the supposed number and by reversing the supposed number would have similar digits at each position.
hence if the sum is 40 then by dividing it by 5 we will get the required digit I.e.8...hence no is...88888 which can only be obtained by adding 23456 with 65432.
hence the product of 6*5*4*3*2=720.

Like? Yes (1) | No (2)  

Saurabh Kumar Gupta   9 years AGO

The required number can be one of the following:
12345, 23456, 34567, 45678, 56789
The numbers obtained by reversing the digits are:
54321, 65432, 76543, 87654, 98765
Adding the corresponding ones we get:
66666, 88888, 111110, 133332, 155554
Out of these only 88888 has sum of digits as 40
so the required number is: 23456
So the product of its digits is: 720

Like? Yes (1) | No (2)  

Anish Duwal   9 years AGO

the sum of the number and its reverse will result the number with same digit which will be equal to 40/5=8 so we assume the number 23456 because the sum of its 1st and last digit equals 8, hence its product will be 720

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Ankit Sirohi   9 years AGO

the number thus chosen is 65432 and reverse is 23456
product is 720

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Alok   9 years AGO

digits of original number=(x-4)(x-3)(x-2)(x-1)(x)
digit after reversing=(x)(x-1)(x-2)(x-3)(x-4)

if we take x=1,2,3 we will get negative digit at (x-4) digit,
also x cannot be equal to 4 since it will lead to 10000th place of original no.=0.
so x can be 5,6,7,8,9.

at x=6
original no.=23456
reverse=65432.
Adding both we will get 88888
so, 8+8+8+8+8=40.
Therefore, original no.=23456
so. 2*3*4*5*6=720 Ans.

Like? Yes (2) | No (3)  

kiranmayee   9 years AGO

i taken numbers as 6 5 4 3 2
iam not sure

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Ankit   9 years AGO

The number is : 65432 and the reverse number is 23456 and the product of digits is 720.

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Sarita402   9 years AGO

let unit place=x than number is
(x-4)(x-3)(x-2)(x-1)x
nd accoding to question
(x-4)+(x-3)+(x-2)+(x-1)+x=40
so x=6
so number is
23456
nd multiplication is 720
so ans is 3

Like? Yes (1) | No (2)  

sudhakar   9 years AGO

let the unit place no b x
so nos are
x, x-1, x-2, x-3, x-4

When we solve the equation.
We get nos : 23456

so product is 720

Like? Yes (1) | No (2)  

Ankit Pandey   9 years AGO

The digits are x, x-1,x-2, x-3, x-4.
now 2(5x-10)=40
x=6
thus product of all digit = 6! = 720

Like? Yes (1) | No (2)  

Pankaj   9 years AGO

five digit no.-
U-4 U-3 U-2 U-1 U

reverse five digit no.-
U U-1 U-2 U-3 U-4

Sum=> 5U-10=40 (given)
U=6

=> no. is 23456

Product=720

Like? Yes (5) | No (6)  

Abhishek singh   9 years AGO

654321 will b the digit.

Like? Yes (1) | No (2)  

Jaspalsingh Parmar   9 years AGO

65432=20
Reversing 23456
Addinng both 40
720

Like? Yes (3) | No (5)  

Avani Patoria   9 years AGO

Let's take 5 digits is abcde
According to the condition whole number is like,
(b-1)(c-1)(d-1)(e-1)e
=(e-4)(e-3)(e-2)(e-1)e
=5e-10

according to given condition;
5e-10+5e-10=40
10e-20=40
e=6

the number is 23456
and the product is 720

Like? Yes (1) | No (3)