1. 
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

Answer: Option B

Explanation:

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