How many 7's are there in the following serie | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) We need to find the pattern $X, 6, 7$ where $X 
eq 8$.Let's analyze the series: $8, 7, 6, 7, 8, 6, 7, 5, 6, 7, 9, 7, 6, 1, 6, 7, 7, 6, 8, 8, 6, 9

Vedclass · Accepted Answer

Three

Vedclass · Answer

(D) We need to find the pattern $X, 6, 7$ where $X 
eq 8$.Let's analyze the series: $8, 7, 6, 7, 8, 6, 7, 5, 6, 7, 9, 7, 6, 1, 6, 7, 7, 6, 8, 8, 6, 9, 7, 6, 8, 7$.$1$. $8, 7, 6, 7$: Here $6$ is preceded by $7$,not $8$. This fits the criteria $(X=7)$.$2$. $8, 6, 7$: Here $6$ is preceded by $8$. This does not fit.$3$. $5, 6, 7$: Here $6$ is preceded by $5$,not $8$. This fits the criteria $(X=5)$.$4$. $1, 6, 7$: Here $6$ is preceded by $1$,not $8$. This fits the criteria $(X=1)$.$5$. $8, 6, 9, 7$: No $6, 7$ sequence.$6$. $6, 7, 7$: Here $6$ is preceded by $7$,not $8$. This fits the criteria $(X=7)$.$7$. $8, 6, 9, 7, 6, 8, 7$: Here $6$ is preceded by $7$,not $8$. This fits the criteria $(X=7)$.Counting the valid occurrences,we find $4$ such instances.

How many $7$'s are there in the following series which are preceded by $6$ but not preceded by $8$ (i.e.,the sequence $6, 7$ where $6$ is not immediately preceded by $8$)?
Series: $8, 7, 6, 7, 8, 6, 7, 5, 6, 7, 9, 7, 6, 1, 6, 7, 7, 6, 8, 8, 6, 9, 7, 6, 8, 7$

Similar Questions

Among $A, B, C, D$ and $E$ each having a different weight,$D$ is heavier than $A$ and $E$,and $B$ is lighter than $C$. Who among them is the heaviest?

Reaching the place of meeting on Tuesday $15 \,minutes$ before $08:30 \,hours$,Anuj found himself half an hour earlier than the man who was $40 \,minutes$ late. What was the scheduled time of the meeting?

How many numbers between $9$ and $54$ (inclusive) are exactly divisible by $9$ but not by $3$?

In a column of girls,Kamal is $11^{th}$ from the front. Neela is $3$ places ahead of Sunita,who is $22^{nd}$ from the front. How many girls are there between Kamal and Neela in the column?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

How many $7$'s are there in the following series which are preceded by $6$ but not preceded by $8$ (i.e.,the sequence $6, 7$ where $6$ is not immediately preceded by $8$)?Series: $8, 7, 6, 7, 8, 6, 7, 5, 6, 7, 9, 7, 6, 1, 6, 7, 7, 6, 8, 8, 6, 9, 7, 6, 8, 7$