$\mathrm{The} \mathrm{value} \mathrm{of} \sqrt[3]{ - 91125} - \sqrt[3]{512} = ?$

•  - 53

• 42

• 73

• - 37

12.

If 13⁵⁰ is divided by 14, the remainder is

• 13

• 12

• 1

•  - 1

$\mathrm{lf} 3 (5\mathrm{x} - 7) - 4(8\mathrm{x} - 13) = 2(9\mathrm{x} - 11) - 17, \mathrm{then} \mathrm{the} \mathrm{value} \mathrm{of} \frac{7\mathrm{x} - 5}{11\mathrm{x} - 9}$

• $- \frac{14}{31}$

• $- \frac{9}{13}$

• $\frac{9}{13}$

• $\frac{14}{31}$

Let x = 597 x 10²²  + 73.5 x 10²¹. When x is expressed in standard form as 6.0435 x 10^m. then the value of m is

• 22

• 23

• 24

• 21

The multiplication of the age of Rajeev, before 5 yr and after 9 yr, is 15. What is the present age of Rajeev ?

• 6yr

• 7yr

• 5yr

• 8yr

If(29)7⁵ is divided by 28, then remainder will be

• 0

• 1

• 29

• 7

If sum of three consecutive multiples of 7 is 777, then least multiple will be

• 252

• 259

• 272

• 266