1.

1 + (x)/( a_1) + ( x( x+a_1) )/( a_1 a_2 ) + .... + ( x ( x+a_1) (x+ a_2)... ( x+a_(n-1) ) )/( a_1 a_2 ..... a_n)=

Answer»

`(x+a_1) (x+a_2) ….. (x+a_n))/( a_1 a_2… a_n)`
`( ( x-a_1) ( x-a_2) …. (x-a_n))/( a_1 a_2 ……a_n)`
`(x+a_1 ) ( x+a_2) …... (x+a_n)`
`(x-a_1) (x-a_2)…..... (x-a_n)`

ANSWER :A


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