Square Roots And Cube Roots Q30

30.      If 5 = 2.236, then the value of 5/2 - 10/5 + 125 is equal to:  

     A.   5.59

     B.   7.826

     C.   8.944

     D.   10.062

Answer:

Option : B 

⇒		5	-	10	+ 125		=		52 - 20 + 25 x 55
		2		5					25

=		5 - 20 + 50
		25

=		35	x	5
		25		5

=		355
		10

=		7 x 2.236
		2

=	7 x 1.118

=

7.826