Question
Four number-pairs have been given, out of which three
are alike in some manner and one is different. Select the number-pair that is different.Solution
14² - (1 + 4) = 196 – 5 = 191 10² - (1 + 0) = 100 – 1 = 99 16² - (1 + 6) = 256 – 7 = 249 18² - (1 + 8) = 324 – 9 = 315
2, 6, ?, 20, 30, 42
15, 31, 67, 131, ?, 375
18, 21, 45, 138, 555, ?
178    168    148   ?     78    28
Which of the following number will replace the question mark (?) and complete the given number series?
4, 5, 12, 39, 160, ?
106, 124, 88, 142, ?, 160
18, 30, 54, 90, 138, ?
What will come in place of the question mark (?) in the following series?
130, 158, 214, 298, ?, 550
Find the missing number in the given number series.
3, 7, 18, 38, 69, ?- What will come in place of the question mark (?) in the following series?
29, 32, 41, 68, ?, 392