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In a two digit number, the units digit is x and tens digit is (x+3). What is the sum of the digits in the number?
- a)11x+3
- b)2x+3
- c)3+x
- d)11x+30
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
In a two digit number, the units digit is x and tens digit is(x+3). Wh...
Sum of units digit (x) and tens digit (x + 3) is x + x + 3 = 2x+3.
This question is part of UPSC exam. View all Class 7 courses
Most Upvoted Answer
In a two digit number, the units digit is x and tens digit is(x+3). Wh...
Solution:
Let the two-digit number be 'ab', where a is the tens digit and b is the units digit.
According to the question, we have:
a = x + 3 (since a is the tens digit and it is x+3)
b = x (since b is the units digit and it is x)
The number can be written as: ab = (x + 3)x = x^2 + 3x
To find the sum of the digits in the number, we need to add the tens digit and the units digit, which is equal to a + b, or (x + 3) + x = 2x + 3.
Therefore, the answer is (B) 2x + 3.
Let the two-digit number be 'ab', where a is the tens digit and b is the units digit.
According to the question, we have:
a = x + 3 (since a is the tens digit and it is x+3)
b = x (since b is the units digit and it is x)
The number can be written as: ab = (x + 3)x = x^2 + 3x
To find the sum of the digits in the number, we need to add the tens digit and the units digit, which is equal to a + b, or (x + 3) + x = 2x + 3.
Therefore, the answer is (B) 2x + 3.
Community Answer
In a two digit number, the units digit is x and tens digit is(x+3). Wh...
Option B is correct
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In a two digit number, the units digit is x and tens digit is(x+3). What is the sum of the digits in the number?a)11x+3b)2x+3c)3+xd)11x+30Correct answer is option 'B'. Can you explain this answer?
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