Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 7)
7.
(935421 x 625) = ?
Answer: Option
Explanation:
| 935421 x 625 = 935421 x 54 = 935421 x |  |
10 |  |
4 |
| 2 |
| = | 935421 x 104 | = | 9354210000 |
| 24 | 16 |
= 584638125
Discussion:
35 comments Page 1 of 4.
Prasanna said:
8 months ago
The digit sum of 585628125 is also 6.
How can we choose only B? Please explain.
How can we choose only B? Please explain.
(3)
Sipu said:
1 year ago
9 + 3 + 5 + 4 + 2 + 1 = 24.
625 = 6 + 2 + 5 = 13.
24 * 13 = 312 = 3 + 1 + 2 = 6.
Opt B = 5 + 8 + 4 + 6 + 3 + 8 +1 + 2 + 5 = 42 = 4 + 2 = 6.
Hence, Option B is the answer.
625 = 6 + 2 + 5 = 13.
24 * 13 = 312 = 3 + 1 + 2 = 6.
Opt B = 5 + 8 + 4 + 6 + 3 + 8 +1 + 2 + 5 = 42 = 4 + 2 = 6.
Hence, Option B is the answer.
(37)
Manu said:
3 years ago
935421 * 25 = 23385525.
23385525 * 25 = 584638125.
23385525 * 25 = 584638125.
(5)
Ankita said:
3 years ago
@Raju.
Can you please confirm?
Here I found 6 in both options-in B and in D also.
Can you please confirm?
Here I found 6 in both options-in B and in D also.
(13)
Esak said:
3 years ago
Very helpful, thanks for the answer @Raju.
(2)
Padagala Murali krishna said:
4 years ago
By using the digital sum method you simply solve that question 935421*625 = ?.
Digital sum of 935421 = 6.
And the digital sum of 625 = 4.
Multiply both digital sums of 935421 and 625 because in the question we have a multiplication symbol then 6*4 is 24 digital sum of 24 is 6.
So, verify in the options there is option B is having digital is 6.
Digital sum of 935421 = 6.
And the digital sum of 625 = 4.
Multiply both digital sums of 935421 and 625 because in the question we have a multiplication symbol then 6*4 is 24 digital sum of 24 is 6.
So, verify in the options there is option B is having digital is 6.
(23)
Murali said:
4 years ago
No @Bhukhya Vijay.
The digital sum concept is not applicable to fractions.
The digital sum concept is not applicable to fractions.
Bhukhya Vijay said:
5 years ago
@Raju.
Is the D.S is applicable to Fractions also?
Is the D.S is applicable to Fractions also?
Nandini said:
5 years ago
@All
(935421 x 625) = (935421 x 5^4)
Because 5 x 5 x 5 x 5 = 5 ^4 = 625.
= {935421 x (10 /2)4},
= {935421 x 100000 /16},
= {93542100000/16}.
Than only simple division on your method.
(935421 x 625) = (935421 x 5^4)
Because 5 x 5 x 5 x 5 = 5 ^4 = 625.
= {935421 x (10 /2)4},
= {935421 x 100000 /16},
= {93542100000/16}.
Than only simple division on your method.
(1)
Sagar said:
5 years ago
@Meenu.
Why you multiply 600 20 and 5 ?
Why you multiply 600 20 and 5 ?
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers