Question : Which of the following has the lowest value?
12% of 625
15% of 555
10% of 720
9% of 845

Option 1: 9% of 845

Option 2: 12% of 625

Option 3: 10% of 720

Option 4: 15% of 555

Question : If $3^{10} × 27^{2}= 9^{2}×3^{n}$, then the value of $n$ is:

Option 1: 10

Option 2: 12

Option 3: 15

Option 4: 30

Question : If $4x^{2}=15^{2}–9^{2}$, then the value of $x$ is:

Option 1: 9

Option 2: 6

Option 3: 3

Option 4: 12

Question : Directions: By Interchanging the given two numbers which of the following equations will be correct?
1 and 9

Option 1: 9 × 3 – 4 ÷ 2 + 1 = 10

Option 2: 1 + 9 × 3 – 4 ÷ 2 = 18

Option 3: 9 × 2 + 1 – 8 ÷ 4 = 12

Option 4: 9 – 1 + 6 ÷ 2 × 3 = 7

Question : Find the value of the given expression:
$10 \div 5 × 1+3 - [8 - \{5 - (7 - 7 - 9)\}]$

Option 1: 11

Option 2: 10

Option 3: 9

Option 4: 8

Question : If $(4 y-\frac{4}{y})=13$, find the value of $(y^2+\frac{1}{y^2})$.

Option 1: $12 \frac{11}{16}$

Option 2: $10 \frac{9}{16}$

Option 3: $12 \frac{9}{16}$

Option 4: $8 \frac{9}{16}$