A series is given with one term wrong. Select the wrong term from the given alternatives. 987, 983, 975, 963, 947, 927, 905, 875
905
In a wrong-term series the numbers move by a smooth, predictable pattern of differences, and the single term that forces the pattern to break is the incorrect one.
List the successive differences from the start: \(987 - 983 = 4\), \(983 - 975 = 8\), \(975 - 963 = 12\).
Continuing, \(963 - 947 = 16\) and \(947 - 927 = 20\), so each drop is 4 larger than the one before it.
The chain of decrements is therefore 4, 8, 12, 16, 20, which means the very next fall should be 24.
Applying that step, the term after 927 must be \(927 - 24 = 903\), but the series prints 905, so 905 is the term sitting out of place.
To confirm the correction, the following decrement should be 28, and starting from the right value, \(903 - 28 = 875\), which matches the given last term exactly.
Had we instead kept the wrong 905, the last gap would have been \(905 - 875 = 30\), breaking the neat +4 progression and confirming the error lies at 905.
The concept is tracking a chain of differences that themselves grow by a fixed step, so the wrong term in the series is 905.
Similar Questions
In the following question, four number pairs are given. In each pair the number on left side of (−) is related to the number of the right side of (−) with some Logic/Rule/Relation. Three pairs are similar on the basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.
(NOTE: Operations should be performed on the whole numbers, without breaking down the number into its constituent digits. E.g.13 − Operations on 13 such as adding /subtracting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)
Directions: Select the correct options from the given alternatives
960,160,32,?
Directions: Pick the correct options from below.
16/2, 36/2,? , 100/2, 144/2
Directions: Pick the correct options from below.
8, 18, 32, 50, ?
Identify the next number in the sequence.
8, 24, 48, 80, 120, ?
A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
11, 36, 147, ? , 1779, 5340, 21363
Find the next element that replace the ? Logically
90, 109, 130, 153, ?
Find the next element that replace the ? Logically
30, 41, 54, 69, ?
A series is given with one term wrong. Select the wrong term from the given alternatives.
-913, -916, -924, -937, -955, -975, -1006, -1039
In three of the following pairs are same by same pattern except one pair. Which pair does not follow this pattern?
Important Questions from Number Based
In the following question, four number pairs are given. The number on left side of (-) is related to the number of the right side of (-) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.
Select the set in which the numbers are related in the same way as are the number of the following set.
(3, 7, 58)
Find the odd number/letters from the given alternatives.
Identify the number which is different from the other.
Three of the given options are alike in a certain way. However, one option is not like the other three. Select the option that is different from the rest.
