Saved Bookmarks
| 1. |
ARUJCL UL LIIC LIISIL.ut of the digits of a two digit number is 18 when 63 is subtracted from the number, we44. The product ofnumber where the order of the digits gets reversed. Find the number. |
|
Answer» Let the number be 10x+y Given,x × y= 18..........(1)10x + y - 63 = 10 y + x9x - 9y - 63= 09x - 9y = 63x-y = 7..........(.2)x= 7+yput value of x in eq 1 we get( 7+y ) y = 18y² + 7y = 18y² +7y-18=0 y² +9y -2y -18= 0y(y+9) -2 ( y +9) =0( y+9) (y-2) = 0y=-9 , y = 2y= 2.so, x= 7+2=9 therefore the two digit number is 10(9)+2= 92. |
|