Question
If x = 21, then the value of x5 -
22x4 + 22x3 - 22x2 + 22x - 1 isSolution
Given expression :Â x 5Â - 22x 4Â + 22x 3Â - 22x 2Â + 22x - 1 = x5 - 21x 4Â - x4 +Â 21 x 3Â + x3 -Â 21 x2 - x2 +Â 21 x + x - 1 = x5 -x5 -x4 + x4 +x3-x3-x2+x2+21 -1 [given that x = 21] = 21-1 = 20
71, 79, 88, 152, ?, 393
1595, 1083, 740, 524, 399, ?Â
What value should come in the place of (?) in the following number series?
300, 421, 252, ?, 188, 549
What value should come in the place of (?) in the following number series?
4, 10, 22, 46, ?, 190
15.975 ×27.825 + (76.01)² + 12.98×18.426 = ?+ (79.09)²
 5, 6, 14, 45, 184, ? Â
124, 147, 176, 207, 244, ?
What value should come in place of (?) question mark in the following number series.
96, 48, 24, 12, 6, ?
Find the missing number, in the given number series.
6, 12, 36, ?, 720, 4320
78, 88, 100, 114, ?, 148
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