Q. 14.2( 33 Votes )

Use the given letters to write the answer.

i. There are ‘a’ trees in the village Lat. If the number of trees increases every year by ‘b’, then how many trees will there be after ‘x’ years?

ii. For the parade there are y students in each row and x such row is formed. Then, how many students are there for the parade in all?

iii. The tens and units place of a two-digit number is m and n respectively. Write the polynomial which represents the two-digit number.

Answer :

i. Given:

Total number of trees in the village = a


Increase in the number of trees by = b


To find: Number of trees after x years


Number of trees in x years = (a + b) x


ii. Given:


Number of students in each row = y


Number of rows of Students = x


So total number of students = x × y


= xy


iii. For a number in tens place should be multiplied with ten and for the number in units place should be multiplied by one. So the number that can be formed as follows:


Since m is in tens place and n is in units place,


10 × m + 1 × n


10m + n


So the polynomial representing the two digit number is = 10m + n


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