Question
If a + b + c = 6, a³ + b³ + c³-3abc =
342, then what is the value of ab + bc + caSolution
Here is 2 equation and 3 variable Extra variable it can be put anything else = C = 0 A + b = 6, a3 + b3 = 342 Ab = ? = (a +b)3 = a3 + b3 + 3ab (a + b) = 216 = 342 + 3ab × 6 = 18ab = 126 = ab = 7
What will come in place of (?) Question mark in the given number series.
10, 15, 30, 75, 225, 787.5, ?
Find the missing number in the given number series.
 305, 316, 302, ?, 295, 346Â
What will come in place of the question mark (?) in the following series?
18, 25, 36, 49, 66, ?
16, 8, 8, 12, ?, 60
110, 112, 116, 122, 130, ?
6, 7, 15, 46, 185, ?
What will come in place of the question mark (?) in the following series?
1458, ?, 162, 54, 18, 6
3 4 10 33 136 ?
...16, 24, 36, ?, 81, 121.5
What will come in place of the question mark (?) in the following series?
17, 138, 307, 532, ?, 1182
