Square Root and Cube Root - General Aptitude

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

2 5

A 5.59

B 7.826

C 8.944

D 10.062

ANS:B - 7.826

5	-	10	+ 125	=	(5)² - 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