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 2 of 4.
R.V said:
1 decade ago
93542100*6.
935421*20.
935421*5.
We take multiply of 20 and 5 is 20/5 = 4.
"93542100/4".
935421*20.
935421*5.
We take multiply of 20 and 5 is 20/5 = 4.
"93542100/4".
Vignesh said:
1 decade ago
935421* (600+20+5).
935421*6 = 5612526 add two 0 in end 561252600. -----A.
935421*2 = 1870842 add one 0 in end 18708420. ------B.
935421*5 = 4677105. -----C.
A+B+C = 584638125.
935421*6 = 5612526 add two 0 in end 561252600. -----A.
935421*2 = 1870842 add one 0 in end 18708420. ------B.
935421*5 = 4677105. -----C.
A+B+C = 584638125.
(2)
Prema said:
1 decade ago
Simply you will multiply 935421 with 625.
Nitesh vatsa said:
10 years ago
Lucky digit method.
Cancel multiple of 9 and add the rest.
3+2+1 = 6.
6+2+5 = 13 = 1+3 = 4.
6*4 = 24, 2+4 = 6.
Now check lucky digit method for option.
1. Cancel all combination of nine.
Add the rest 5+8 = 13 = 1+3 = 4.
So correct answer is B.
Cancel multiple of 9 and add the rest.
3+2+1 = 6.
6+2+5 = 13 = 1+3 = 4.
6*4 = 24, 2+4 = 6.
Now check lucky digit method for option.
1. Cancel all combination of nine.
Add the rest 5+8 = 13 = 1+3 = 4.
So correct answer is B.
Mili said:
9 years ago
How 2 power 4 comes in denominator?
Priyank said:
9 years ago
@Nitesh Vatsa.
Options B and D both have sum = 6.
Then which is the correct answer?
Options B and D both have sum = 6.
Then which is the correct answer?
(1)
Raju said:
9 years ago
By logic.
9 + 3 + 5 + 4 + 2 + 1 * 6 + 2 + 5 = 24 + 13,
==> 2 + 4 * 1 + 3 = 6 x 4,
==> 24 = 2 + 4 = 6.
1. 5 + 7 + 5 + 6 + 4 + 8 + 1 + 2 + 5 = 43 => 4 + 3 = 7.
2. 5 + 8 + 4 + 6 + 3 + 8 + 1 + 2 + 5 = 42 => 4 + 2 = 6.
So, option 2 satisfy with the given expression.
Therefore, option 2 is the answer.
9 + 3 + 5 + 4 + 2 + 1 * 6 + 2 + 5 = 24 + 13,
==> 2 + 4 * 1 + 3 = 6 x 4,
==> 24 = 2 + 4 = 6.
1. 5 + 7 + 5 + 6 + 4 + 8 + 1 + 2 + 5 = 43 => 4 + 3 = 7.
2. 5 + 8 + 4 + 6 + 3 + 8 + 1 + 2 + 5 = 42 => 4 + 2 = 6.
So, option 2 satisfy with the given expression.
Therefore, option 2 is the answer.
(3)
Sidharthan m said:
7 years ago
Please help me to solve this problem.
The sum and product of two numbers are 13 and 40 respectively. The sum of their reciprocal is?
The sum and product of two numbers are 13 and 40 respectively. The sum of their reciprocal is?
Chinmayi said:
7 years ago
@Raju.
Option 4 also satisfy with given expression.
5+8+5+6+2+8+1+2+5 => 4+2 => 6.
Then how to choose the correct answer?
Option 4 also satisfy with given expression.
5+8+5+6+2+8+1+2+5 => 4+2 => 6.
Then how to choose the correct answer?
(2)
Udaya shankar s said:
7 years ago
How 10/2 comes will you please explain?
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