Question
Find out the quantity of four-digit numbers that can be
created by utilizing the digits from 1 to 9 if repetition of digits is not allowed?Solution

128, 132, 123, 139, 113, 150
Find the wrong number in the following series.
638, 518, 451, 352, 297, 218
Find the wrong number in the given number series.
16, 24, 36, 54, 81, 120.5
Find the wrong number in the given number series.
13, 20, 31, 44, 62, 80
21Â Â Â Â Â Â Â Â Â Â 32Â Â Â Â Â Â Â Â Â Â 54Â Â Â Â Â Â Â Â Â Â 86Â Â Â Â Â Â Â Â Â Â 131Â Â Â Â Â Â Â Â 186
...1080, 1058, 1016, 934, 772, 440
547, 594, 640, 691, 741, 792
- Find the wrong number in the given number series.
27, 38, 52, 70, 94, 122 Find the wrong number in given series.
918, 943, 992, 1073, 1194, 1388
In each of the following number series, one term is wrong. Find the wrong term.
2, 9, 28, 65, 128, 217, 344