Q. 173.8( 5 Votes )
A whole number is added to 25 and the same number is subtracted from 25. The sum of the resulting numbers is
A. 0
B. 25
C. 50
D. 75
Answer :
Let the whole number = a
First number = 25 + a
Second number = 25 - a
Sum of resulting numbers = 25 + a + (25 - a)
= 25 + a + 25 - a
= 25 + 25 + a - a
= 50 + 0
= 50
Rate this question :
Estimated sum of 7826 and 12469 rounded off to hundreds is 20, 000.
NCERT - Exemplar MathematicsThe largest 4-digit number, using any one digit twice, from digits 5, 9, 2 and 6 is
NCERT - Exemplar MathematicsWhen rounded off to nearest thousands, the number 85642 is
NCERT - Exemplar MathematicsBy using dot (.) patterns, which of the following numbers can be arranged in all the three ways namely a line, a triangle and a rectangle?
NCERT - Exemplar MathematicsWhich of the following is not true?
NCERT - Exemplar MathematicsThe number 85764 rounded off to nearest hundreds is written as 85700.
NCERT - Exemplar MathematicsThe largest number which always divides the sum of any pair of consecutive odd numbers is
NCERT - Exemplar MathematicsThe product of successor and predecessor of 999 is
NCERT - Exemplar MathematicsA whole number is added to 25 and the same number is subtracted from 25. The sum of the resulting numbers is
NCERT - Exemplar MathematicsThe product of a non-zero whole number and its successor is always
NCERT - Exemplar Mathematics