Question
If x2 – 8√2x + 1 = 0, then what
is the value of x3 + 1/x3.Solution
Since, x2 – 8√2x + 1 = 0 Or, x + 1/x = 8√2 So, x3 + 1/x3 = (x + 1/x)3 – 3(x + 1/x) = 1024√2 – 24√2 = 1000√2
23 45 89 155 ? 353
3, 10, 29, 66, ?
98, 122, 182, 278, 410, ?
In each of the following number series, one term is missing. Find the missing term.
3, 8, 15, 24, 35, ?
What should come in place of (?) question mark in the following number series.
4, 9, 19, 34, 54, ?
98, 89, 114, 50, 194, ?
15.975 ×27.825 + (76.01)² + 12.98×18.426 = ?+ (79.09)²
What will come in place of the question mark (?) in the following series?
4, 11, 32, 95, 284, 851, ?
16, 15, 24, -1, 48, ?
What will come in place of the question mark (?) in the following series?
112, 123, 144, 169, 190, ?