Squares of Numbers between 75 and 125

Q. ${85}^2$ = ___________.

1. 7225
2. 6225
3. 8225
4. 6355

Q. Find ${107}^2-{75}^2$.

1. $17000$
2. $17225$
3. $17245$
4. $17074$

Q. Express ${111}^2$ in the form of $(a+b{)}^2$ .

1. (${100}^2)$ + ($2\times 100\times 11$) + $(11{)}^2$
2. (${101}^2)$ + ($2\times 100\times 11$) + $(11{)}^2$
3. (${100}^2)$ + ($1\times 100\times 11$) + $(11{)}^2$
4. (${10}^2)$ + ($2\times 100\times 11$) + $(111{)}^2$

Q.

$\frac{8}{3}$ $>$ $\frac{9}{4}$

1. a² + b² – 2ab

2. a² + b² + 2ab

Q.

In 2020, If we multiply first two digits and last two digits then result will be a perfect square(i.e., 20 × 20 = 400 = 20${}^2$). How many such numbers exist between 2010 to 2099?

(Exclude 2020)

Q. Find ${107}^2-{75}^2$.

1. $17000$
2. $17225$
3. $17245$
4. $17074$