Letter and Symbol Series Questions and Answers

Answer: C

The element is W.

Dropping every symbol leaves 15 elements:

S T M H 2 D 4 C 8 K A W P 7 F

The 14th from the right end is the 2nd from the left, which is T. Counting ten places to the right of T, the 12th from the left, gives W.

P is the 11th place to the right of T, one too far. 7 and H do not lie ten places to the right of T in the series without symbols.

Answer: D

There are 4 such digits.

The digits in the arrangement are 2, 4, 8 and 7. Checking the element immediately after each:

2 is followed by D, 4 by C, 8 by K and 7 by F. All four of these are consonants, so every digit qualifies.

'None', 2 and 3 undercount. A slip such as treating the 8 as followed by a symbol, or overlooking the 7 near the end, gives one of these smaller numbers.

Answer: A

The missing element is $.

Number the arrangement from the left: S(1) *(2) T(3) M(4) H(5) $(6) 2(7) D(8) =(9) 4(10) C(11) %(12) 8(13) K(14) &(15) A(16) ?(17) W(18) P(19) +(20) @(21) 7(22) F(23).

Each group takes an element, the one just before it, and the one two places after it. In '2 $ =', 2 is 7th, $ is 6th and = is 9th. '8 % &' is 13th, 12th, 15th, 'A & W' is 16th, 15th, 18th, and 'P W @' is 19th, 18th, 21st.

The last group starts with M (4th) and T (3rd), so the third element is the 6th, which is $. H is the 5th, one place short, and * is the 2nd.

Answer: D

The element is D.

The arrangement has 23 elements. The 11th from the right end is the \(23 - 11 + 1 = 13\)th from the left, which is 8. The fifth to the left of it is the \(13 - 5 = 8\)th from the left, which is D.

% is the element just before 8, one to its left, and = and A are at other distances (the 9th and 16th from the left). Only D is exactly five places to the left of 8.

Answer: A

Correct answer: U

The letters run backwards through the alphabet, one step at a time: Z, Y, X, W, V. The next letter back from V is U.

Answer: B

Correct answer: N5

Two things advance together: the letters move on one place each time - J, K, L, M, then N - and the numbers count up 1, 2, 3, 4, then 5. So the next term is N5.

Answer: C

Correct answer: U

The gaps between the letters grow by one each time: A \( \xrightarrow{+2} \) C \( \xrightarrow{+3} \) F \( \xrightarrow{+4} \) J \( \xrightarrow{+5} \) O. The next gap is 6, and six letters on from O (the 15th letter) is the 21st - U.

Answer: D

Correct answer: U16

The letters advance one place at a time - Q, R, S, T, then U - while the numbers double: 1, 2, 4, 8, then 16. So the next term is U16.

Answer: A

Correct answer: D, w

Two series are interleaved: the odd places run forward from the start of the alphabet - A, B, C, then D - and the even places run backwards from the end - Z, Y, X, then W.

Answer: B

Correct answer: 16k

The numbers double each time - 1, 2, 4, 8, then 16 - while the letters move on by one more place each time: A \( \xrightarrow{+1} \) B \( \xrightarrow{+2} \) D \( \xrightarrow{+3} \) G, so the next step is \( +4 \), taking G (the 7th letter) to the 11th, K. The term is 16K.