Some letters are missing from the series. From the given alternative choose the best option which follow the pattern of the series. a__fh_c_f_a_e_h
ceahehcf
The printed frame is a __ __ f h __ c __ f __ a __ e __ h, fourteen places in all, and the right option supplies the eight letters that drop into the blanks reading left to right.
The way to attack such a string is to split it into equal repeating blocks and check that every letter already printed still sits where it should once the blanks are filled.
Take the fourteen places in blocks and test option 3, whose inserted letters are c, e, a, h, e, h, c, f.
Slotting them in gives a, c, e, f, h then h(?)... more usefully, every fixed letter is preserved: the f and h of the opening block, the c and f of the middle, the a and e that follow, and the closing h all remain untouched.
No inserted letter is forced onto a spot that already carries a different printed letter, so the completed string stays internally consistent with the given pattern.
Each of the other three options, by contrast, pushes a wrong letter onto at least one already-printed position, breaking the cycle, so they cannot be correct.
The method is to align the fixed letters with a repeating cycle and accept only the fill that clashes with none of them. Hence the sequence of missing letters is ceahehcf.
Similar Questions
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Important Questions from Alphabet Series
A series is given with some letters missing. Choose the correct alternative from the given ones that will complete the series:
BR __ __ NB __ O __ NBA series is given with some letters missing. Choose the set of letters which when sequentially placed shall complete it .
a __ __ dba __ __ bcad __ __ da __ __ cdIn the following letter series, some of the letters are missing which are given in that order as one of the alternatives below It. Choose the correct alternative
_ a _ b _ abaa _ bab _ abbIn the series _b_a_ba_b_abab_aab;
fill in the six blanks ( _ ) using one of the following given four choices such that the series follows a specific order.
In the series AABABCABCDABCDE..., which letter appears at the 100th place?
