If p + m = 6 and p3 + m3 = 72, then the value of pm is
6
12
9
If then the value of is
7
1
If 2s = a + b + c, then the value of s(s - c) + (s - a) (s - b) is
ab
abc
0
2
If ab + bc + ca = 0, then the value of is
3
If , then is
The factors of are
If 4x + 5y = 83 and 3x : 2y = 21 : 22, then (y - x) is
4
11
B.
Shortcut Method:3x : 2y = 21 : 22⇒ 3 x 7 : 2 x 11 = 21 : 22And,4x + 5y = 834 x 7 +5 x 11 = 83clearly, x = 7, y = 11(y - x) = (11 - 7) = 4
If x = 11, then the value of is
5
10
15
20