Online Arithmetic aptitude Test ( Simplification )

What mathematical operation should come at the place of '?' in the equation : 2 ? 6 - 12 / 4 + 2 = 11.

Which of the following will come in place of both the question marks in the following equation ?

$\frac{128+16 \times ?-7\times 2}{7^{2}-8\times 6+?^{2}}=1$

By how much is three-fifth of 350 greater than four-seventh of 210 ?

$\frac{4335}{4(?)24}+1\frac{7}{8}=\frac{289}{528}$

$\frac{3}{4}+2\frac{1}{4}$ of $\frac{2}{3}-\frac{\frac{1}{2}-\frac{1}{3}}{\frac{1}{2}+\frac{1}{3}}\times3\frac{1}{3}+\frac{5}{6}=?$

A student was asked to solve the fraction $\frac{\frac{7}{3}+1\frac{1}{2}of \frac{5}{3}}{2+1\frac{2}{3}}$ and his answer was 1/4. By how much was his answer wrong?

5.8 x 2.5 + 0.6 x 6.75 + 139.25 = ?

2.002 + 7.9 {2.8 - 6.3 (3.6 - 1.5) + 15.6} = ?

If $\frac{a}{b}=\frac{4}{5}$ and $\frac{b}{c}=\frac{15}{6}$, then $\frac{c^{2}-a^{2}}{c^{2}+a^{2}}$ is

Which of the following values of x and y satisfy the following equations I and II ?

I. 3x + y = 19              II. x - y = 9

If a + b = 5 and 3a + 2b = 20, then (3a + b) will be :

How may pieces of 85 cm length can be cut from a rod 42.5 metres long ?

A sum of Rs. 750 is distributed among A, B, C and D in such a manner that A gets as much as B and C together, B gets Rs. 125 more than C and D gets as much as C. What is A's share ?

A 70 cm long wire is to be cut into two pieces such that one piece will be 2/5 as long as the other. How many centimetres will the shorter piece be ?

A certain amount is distributed among A, B and C. A gets 3/16 and B gets 1/4 of the whole amount. If C gets Rs. 81, then B gets :