CA Foundation · Quantitative Aptitude · Number Series, Coding-Decoding and Odd Man Out
Find the next term in the letter series: Z, X, U, Q, ?
The next letter is L. The letters sit at positions 26, 24, 21, 17, and the gaps grow by one each time (-2, -3, -4). The next gap is -5, so 17 becomes 12, which is the letter L.
- AK
- BLCorrect
- CM
- DN
Explanation
Positions are Z=26, X=24, U=21, Q=17. The differences are -2, -3, -4, so the next difference is -5, giving 17-5=12, which is L. Option M (13) would result from subtracting only 4 again.
Did you get it right without looking?
One question tells you little. A timed set on Number Series, Coding-Decoding and Odd Man Out shows your real accuracy, how long you take and where you lose marks.
More Number Series, Coding-Decoding and Odd Man Out questions
- In a certain code, each letter is replaced by its position in the alphabet (A=1, ..., Z=26) and the result is then multiplied by 2. What is …
- In a coding system, every letter is replaced by its position in the alphabet (A=1, B=2, C=3, and so on). What is the sum of the codes of the…
- In the series 2, 3, 5, 9, 17, 33, 66, one term does not fit the pattern. Which term is wrong and what is its correct value?
- In a certain code, the word CAB is written as 312 using the rule A=1, B=2, C=3, and so on. Using the same rule, what is the code for the wor…
- If in a coding system, RAJESH is coded as 18-1-10-5-19-8 using A=1, B=2, C=3, ... Z=26, what would be the code for APURVA?
- In the series 3, 8, 15, 24, 35, 48, ?, the differences between consecutive terms form a pattern. What is the missing term?