Veena
Last Activity: 7 Years ago
Here we can use BODMAS rule. BODMAS rule explains that while we solve a numerical problem of different sign , first we have to open the bracket if any, the 2nd thing we have to check whether there is any 'OF' , eg: 5 percent OF 100, that is 100×5/100 which is equal to 5. Next part that is the thing we have to use in our problem, ie,DMAS, which means Division, Multiplication, Addition, then Subtraction, So in our question 5*5-5+5/5, first we have to done Division, so it will become
5*5-5+1,as 5/5=1
Then we have to do the multiplication, 25-5+1, as 5*5=25
Then addition have to be done, 25-4, as -5+1=4, here 2 numbers having different sign , so we have to subtract the small number from the large number and put the sign of the large number,
Then the last one is subtraction and we get the answer 21.