Question : What is the value of $(2.3+1.7)^{2}-(2.3-1.7)^{2}?$

Option 1: 15.64

Option 2: 4.45

Option 3: 7.82

Option 4: 6.62

Question : The value of $(\frac{1}{2} + \frac{3}{4}) ÷ (\frac{1}{5}+ \frac{3}{10})$ lies between:

Option 1: 2.7 and 3.0

Option 2: 2.0 and 2.2

Option 3: 1.5 and 1.8

Option 4: 2.3 and 2.6

Question : What is the value of $42 \div[18-\{6+(3$ of $4-4-2$ of 5$)\}] ?$

Option 1: 5

Option 2: 6

Option 3: 2

Option 4: 3

Question : What is the value of (1 ÷ 2) of 10 + (1 ÷ 4) of 12?

Option 1: –11

Option 2: 11

Option 3: –3

Option 4: 8

Question : What is the value of $\frac{180 \div 15-12+13}{4 \text { of } 3+1}?$

Option 1: 4

Option 2: 11

Option 3: 0

Option 4: 1

Question : What is the value of $4^{2}-3^{2}+6^{2}-5^{2}+8^{2}-7^{2}$?

Option 1: 30

Option 2: 33

Option 3: 3

Option 4: 27