If the sum of two numbers is 33 and their difference is 15, the smaller number is:
সমাধান
সঠিক উত্তর: Option A
x + y = 33{sum of two numbers is 33} ..........(1)
x - y = 15 {difference of two numbers is 15}..........(2)
eqn (1-2)
x+y-x+y=33-15
y=9
