Which of the following numbers will replace the question mark (?) in the given series?
15, 31, 63, 127, 255, ?
Given: 15, 31, 63, 127, 255, ?
In this series following pattern is followed-
15 × 2 +1 = 30 + 1 = 31
31 × 2 +1 = 62 + 1 = 63
63 × 2 +1 = 126 + 1 = 127
127 × 2 +1 = 254 + 1 = 255
255 × 2 +1 = 510 + 1 = 511
Thus, the correct answer is (b) 511.
English
80 Questions
160 Marks
60 Mins English English20 Questions40 Marks12 Mins English English80 Questions160 Marks60 Mins EnglishHow many pairs of consecutive numbers are there in the following number sequence each of which is in ascending order (Like 1, 2)?
7 6 7 8 6 7 5 6 8 7 7 8 6 5 4 5 6 3 4
Select the number from among the given options that can replace the question mark (?) in the following series.
36, 75, 147, 297, 591, ?
In the following question, select the missing number from the given series.
4, 15, 2, 17, ?, 19
The successor of a number is related to the predecessor in some way. The missing numbers in the given pattern is 2, 5, 7, 12, 19, 31, __, __
Choose the correct alternatives that will continue the same pattern and replace the question mark (?), in the following number series.
99, 33, 36, 12, 15, 5, ?
Complete the given series:
362, 364, _, 368, 370
Suggested Test Series
Suggested Test Series
