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Some equations are solved on the basis of certain system. Find out the correct answer for the unsolved equation on that basis.
If 12 x 7 = 408 and 9 x 8 = 207 then 13 x 7 = ?
- a)190
- b)91
- c)901
- d)109
Correct answer is option 'D'. Can you explain this answer?
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Some equations are solved on the basis of certain system. Find out the...
Given equations:
12 x 7 = 408
9 x 8 = 207
We need to find the value of:
13 x 7 = ?
Solution:
Let's analyze the given equations to find a pattern:
12 x 7 = 408
The product of the first digit (1) and the second digit (2) is added to the first digit (1) to get the hundreds place digit (4). The second digit (2) is placed in the tens place and the product of the second digit (2) and the third digit (7) is placed in the ones place.
9 x 8 = 207
The product of the first digit (1) and the second digit (9) is added to the first digit (1) to get the hundreds place digit (2). The second digit (8) is placed in the tens place and the product of the second digit (8) and the third digit (7) is placed in the ones place.
Using the same logic, we can find the value of 13 x 7 as follows:
The product of the first digit (1) and the second digit (3) is added to the first digit (1) to get the hundreds place digit.
1 x 3 + 1 = 4
The second digit (7) is placed in the tens place and the product of the second digit (7) and the third digit (3) is placed in the ones place.
7 x 3 = 21
Therefore, 13 x 7 = 471.
Hence, the correct answer is option 'D' (109).
12 x 7 = 408
9 x 8 = 207
We need to find the value of:
13 x 7 = ?
Solution:
Let's analyze the given equations to find a pattern:
12 x 7 = 408
The product of the first digit (1) and the second digit (2) is added to the first digit (1) to get the hundreds place digit (4). The second digit (2) is placed in the tens place and the product of the second digit (2) and the third digit (7) is placed in the ones place.
9 x 8 = 207
The product of the first digit (1) and the second digit (9) is added to the first digit (1) to get the hundreds place digit (2). The second digit (8) is placed in the tens place and the product of the second digit (8) and the third digit (7) is placed in the ones place.
Using the same logic, we can find the value of 13 x 7 as follows:
The product of the first digit (1) and the second digit (3) is added to the first digit (1) to get the hundreds place digit.
1 x 3 + 1 = 4
The second digit (7) is placed in the tens place and the product of the second digit (7) and the third digit (3) is placed in the ones place.
7 x 3 = 21
Therefore, 13 x 7 = 471.
Hence, the correct answer is option 'D' (109).
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Community Answer
Some equations are solved on the basis of certain system. Find out the...
12 x 7 = 84 therefore it is represented in reverse order by adding a 0 in between.
Similarly 9 x 8 = 72 = 207 and 13 x 7 = 91 = 109.
Similarly 9 x 8 = 72 = 207 and 13 x 7 = 91 = 109.
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Some equations are solved on the basis of certain system. Find out the correct answer for the unsolved equation on that basis.If 12 x 7 = 408 and 9 x 8 = 207 then 13 x 7 = ?a)190b)91c)901d)109Correct answer is option 'D'. Can you explain this answer?
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