If r varies directly as n and r/m = 10, then what is the value of r when m = 2.2?

[148-{28-58}]≥(?)

Simplify the expression (1+i)⁶+(1+i)⁴ .

6(3 – x) –5 (2x – 4) = 4(3x–) + 14
In the above equation the value of x is:

The number of solutions of x² - 5|x| + 6 = 0 is

If α, β are the roots of (x –√ 3) (x –√ 5) =√ 7, the roots of (x –α) (x –β) +√ 7= 0 are

Solve the simultaneous inequalities: 13x + 4 < 5x +20 andl2x+5>9x + 14.

If 2p + 3q = 18 and 2p – q  =2, then 2p + q =?

 If g = log, (a^x) then p^z =

What is the minimum value of x for which the expression x³ – 7x² + 11x – 5 gives positive values?