Number-Ranking-Time
Sequence Ranking Sequence
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In Ranking Sequence questions, ranks of a person
both from the top and bottom are mentioned and total number of persons is
asked. However, sometimes this question is put in the form of a puzzle of
interchanging seats by two persons.
1.In
a row of trees, one tree is fifth from either end of the row. How many trees
are there in the row ?
A.
8 B. 9 C. 10 D. 11
Answer: B . 9
Justification: Clearly, number of trees in the
row = ( 4 + 1 + 4 ) = 9.
2.In
a queue, Amrita is 10th from the front while Mukul is 25th from behind and
Mamta is just in the middle of the two. If there be 50 persons in the queue.
What position does Mamta occupy from the front ?
A.
20th B. 19th C. 18th D. 17th
Answer: C .
18th
Justification: Number of persons between
Amrita and Mukul = 50 - (10 + 25) = 15. Since Mamta lies in middle of these 15
persons, so Mamta`s position is 8th from Amrita i.e. 18th from the front.
3.Raman
ranks sixteenth from the top and forty ninth from the bottom in a class. How
many students are there in the class ?
A.
64 B. 65 C. 66 D. Cannot be
determined E.
None of these
Answer: A .
64
Justification: Clearly, number of students in
the class = (15 + 1 + 48) = 64
4.Sanjeev
ranks seventh from the top and twenty eight from the bottom in a class. How
many students are there in the class ?
A.
37 B. 36 C. 35 D. 34
Answer: D .
34
Justification: Clearly, number of students in
the class = (6 + 1 + 27) = 34.
5.If
Atul finds that he is twelfth from the right in a line of boys and fourth from
the left, how many boys should be added to the line such that there are 28 boys
in the line ?
A.
12 B. 13 C. 14 D. 20 E. None of these
Answer: B .
13
Justification: Clearly, number of boys in the
line = (11 + 1 + 3) = 15. .'. Number of boys to be added = 28 - 15 = 13.
Number-Ranking-Time
Sequence Number Sequence
In Number sequece questions, you are given a long
series of numbers. It is required to find out how many times a number
satisfying conditions, specified in the questions, occurs.
6.Which
is the third number to the left of the number which is exactly in the middle of
the following sequence of numbers ?
1 2
3 4 5
6 7 8
9 2 4
6 8 9 7 5
3 1 9
8 7 6
5 4 3
2 1
A.
3 B. 4 C. 5 D. 6 E. 7
Answer: B . 4
Justification:
There are 27 numbers in the given sequence.
So, middle number = 14th number = 9.
Clearly, the third number to the left of this 9 is
4.
7.How
many 3's are there in the following sequence which are neither preceded by 6
nor immediately followed by 9 ?
9 3
6 6 3
9 5 9
3 7 8
9 1 6
3 9 6
3 9
A.
One B. Two C. Three D. Four E. None of these
Answer: B .
Two
Justification:
9 3 6
6 3 9 5 9
3 7 8
9 1 6
3 9 6
3 9
8.How
many 6's are there in the following series of numbers which are preceded by 7
but not immediately followed by 9 ?
6 7
9 5 6
9 7 6
8 7 6
7 8 6
9 4 6
7 7 6
9 5 7
6 3
A.
One B. Two C. Three D. Four
Answer: C .
Three
Justification:
6 7 9
5 6 9 7 6
8 7 6
7 8 6
9 4 6
7 7 6
9 5 7
6 3
Number-Ranking-Time
Sequence DateTime Sequence
In Time Sequence questions, you are given a question
based on date and time. It is required to find out either date or no. of days
satisfying conditions in specific question.
9.Kailash
remembers that his brother Deepak`s birthday falls after 20th May but before
28th May, while Geeta remembers that Deepak`s birthday falls before 22nd May but
after 12th May. On what date Deepak`s birthday falls ?
A.
20th May B. 21st May C. 22nd May D. Cannot be
determined E. None of
these
Answer: B .
21st may
Justification: According to Kailash, Deepak`s
birthday falls on onev of the day among 21st, 22nd, 23rd, 24th, 25th, 26th, and
27th May. According to Geeta, Deepak`s birthday falls on one of the days among
13th, 14th, 15th, 16th, 17th, 18th, 19th, 20th, and 21st May. The day common to
both the groups is 21st May. .'. Deepak`s birthday falls in 21st May.
10.Sangeeta
remembers that her father`s birthday was certainly after eighth but before
thirteenth of December. Her sister Natasha remembers that their father`s birthday
was definitely after ninth but before fourteenth of December. On which date of
December was their father`s birthday ?
A.
10th B. 11th C. 12th D. Data inadequate E. None of these
Answer: D .
Data inadequate
Justification: According to Sanbgeeta, the
father`s birthday falls on one of the days among 9th, 10th, 11th and 12th
December. According to Natasha, the father`s birthday falls on one of the day
among 10th, 11th, 12th and 13th December. The days common to both the groups
are 10th, 11th and 12th December. So, the father`s birthday falls on any one of
these days.
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