Puzzles for CET Students

[virendra]

Hi all CET students,

As lot of things are happening for CAT students on this forum and not so much for CET. Therefore I will be posting set of questions (related to CET) in this space. I am expecting your responses.

The Set for today is based on the series.

1. 1, 1, 2, 6, 24,?, 720

(1) 100 (2) 104 (3) 108 (4) 120 (5) None of these

2. 2, 12, 30, 56, ?, 132, 182

(1) 116 (2) 76 (3) 90 (4) 86 (5) None of these

3. 625, 5, 125, 25, 25, ?, 5

(1) 125 (2) 5 (3) 25 (4) 625 (5) None of these

4. P3C, R5F, T8I, V12L, ?

(1) Y17O (2) X17M (3) X17O (4) X16O (5) None of these

5. A, G, L, P, S, ?

(1) X (2) Y (3) W (4) U (5) None of these

[KumarJasapara]

Hi Viru .....

I'm focussing on CAT as of now, but I feel like answering some of the questions asked by you for CET ....

I don't know when the CET students will log in ....

My answers are as follows:

1) I do not have any explanation for this question, but I think the answer should be option {4} .... correct me if I'm wrong ....

2) {3} ..... the nos. r in sequence as 1x2, 3x4, 5x6, 7x8, 9x10, 11x12, 13x14.
So, the missing no. is 90.

3) {1} ..... The nos. in the odd places in the series are decreasing from 625 to 125 to 25 to 5 .... and the nos. in the even places are increasing from 5 to 25 to 125 to 625 ..... so the 3rd no. in the even place of the series would be 125.

4) {3} ..... the first alphabets are increasing alternatively, i.e. P, Q, R, S, T, U, V; the nos. between the two alphabets are increasing in ascending order; i.e. 1, 2, 3, 4, 5 ....; and the last alphabets are increasing leaving a gap of 2 alphabets between themselves i.e. C, D, E, F, G, H, I, J, K, L, M, N, O
Hence, X17O.

5) {4} ..... If we substitute the values of A, B, C, D .... Z as 1, 2, 3, 4 .... 26, we can write the sequence of A, G, L, P, S, ... as 1, 7, 12, 16, 19, ...;
the difference between A and G, i.e. 1 and 7 is 6, similarly difference between G and L, i.e. 7 and 12 is 5 and so on ....
now the differences that we get are in decending order i.e. 6, 5, 4, 3 ...; so the next difference in line would be 2 ... hence the alphabet following S would be greater by two, i.e. U (19 + 2) ....

Yes Viru Sir,
Am I right or Wrong ???

Kumar. :cool:

[PiyushTantia]

the ans to the 1st question is indeed 120....

here's the explanation....
1*1 = 1
1*2 = 2
2*3 = 6
6*4 = 24
24*5 = 120
120*6 = 720

the ans we get on the RHS is multiplied by the next natural number we multiplied earlier starting with 1.

[virendra]

Hi Kumar and Piyush answers for these questions are as follows.
1) Same logic as piyush mentioned, so kumar you got it correct.
2) 2nd Questions is also correct.
3) Answer is right but as per my logic. series is 625/5^3 = 5, 5*5^2 = 125 125/5^1 = 25, 25*5^0 = 25, 25/5^-1 = 125 then 125*5^-2=5
4) it is right.
5) is also right.

that's good. How much time did you take to solve this? From CET point of view not more than 4 minutes can be given to the set.

[virendra]

Directions for Questions 1to 3: Refer to the sequence below and answer the questions that
follow:
2 z 5 ÷ 9 t r 2 × m + 3 b 7 - S

1. How many even numbers are located in even places from left to right?

(a) Two (b) Three (c) One (d) None of these

2. How many letters in the above sequence are immediately preceded as well as
immediately followed by numbers?

(a) One (b) two (c) Three (d) None of these

3. The element located third to the right of the thirteen element from the right is:

(a) r (b) t (c) 2 (d) 9

[Manish Salian]

Hi Viru,

You have titled this thread as 'Puzzles for CET students' - but only CAT students seem to answering them!!

We must encourage even CET students to participate in these contests!!

Regards,

Manish sir

[KumarJasapara]

Hello Viru,

I'm stumped by the Keschan; but will try to answer it anyways,

1) Answer: {c} only even number in even place from left to right is 2;

2) Answer: {b} the two alphabets are 'z' and 'b';

3) Answer: {a} the 13th element from the right is 'the division sign', and the third element to it's right is 'r'.

How did I fare with this set ???

Kumar.:cool:

[virendra]

Hello Viru,

I'm stumped by the Keschan; but will try to answer it anyways,

1) Answer: {c} only even number in even place from left to right is 2;

2) Answer: {b} the two alphabets are 'z' and 'b';

3) Answer: {a} the 13th element from the right is 'the division sign', and the third element to it's right is 'r'.

How did I fare with this set ???

Kumar.:cool:


yes, very good Kumar, it will help you in NMAT and SNAP also.

by the way in third question-
"The element located third to the right of the thirteen element from the right is tenth element from the right". I mean to say you need not to count thirteenth element then go back three places.

[KumarJasapara]

Hi Viru,

Thanks for the short cut ..... :D

Will help me ....

Regards,

Kumar:cool:

[virendra]

This questions contains six statements followed by four sets of
combinations of three. Choose the set in which the statements are logically related.

1.
A. Metal is good material for desks.
B. Desks are made of metal.
C. This object is not a desk.
D. This object is a desk.
E. This object is not made of metal.
F. This is made of metal.

1.ADF 2.BCE 3. ABD 4. BDF

2.
A. No barbarian is gentleman.
B. Some gentlemen are barbarians.
C. Some gentlemen are rude.
D. No gentlemen are rude.
E. Some barbarians are not rude.
F. All barbarians are rude.

1.ABE 2.BCE 3. ADF 4. BDE

3.
A. Some men are bald.
B. Bald people are intelligent.
C. Raman is a man.
D. Raman is bald.
E. Raman is intelligent.
F. All men are intelligent.

1.ABF 2.BDE 3. BCD 4. BEF



Even I dont know answers for this, so let's discuss.

[KumarJasapara]

Hi Viru,

I have a suggestion for you to make the CET students participate in this quiz, I think it would help if you show the CET students the forum page from the classes ka pc and show them how you ask questions and how do they need to answer.

Also, keeping a couple of incentives for prizes would increase involvement in this thread.

Always keen to be of any help.

Regards,

Kumar.:cool:

[virendra]

This questions contains six statements followed by four sets of
combinations of three. Choose the set in which the statements are logically related.

1.
A. Metal is good material for desks.
B. Desks are made of metal.
C. This object is not a desk.
D. This object is a desk.
E. This object is not made of metal.
F. This is made of metal.

1.ADF 2.BCE 3. ABD 4. BDF

2.
A. No Afgani is gentleman.
B. Some gentlemen are Afgani.
C. Some gentlemen are rude.
D. No gentlemen are rude.
E. Some Afgani are not rude.
F. All Afgani are rude.

1.ABE 2.BCE 3. ADF 4. BDE

3.
A. Some men are bald.
B. Bald people are intelligent.
C. Mohan is a man.
D. Mohan is bald.
E. Mohan is intelligent.
F. All men are intelligent.

1.ABF 2.BDE 3. BCD 4. BEF



Even I dont know answers for these, so let's discuss.

[KumarJasapara]

Hi Viru,

For the latest set of Keschans, here are my answers:

1) {4} BDF: Desks are made of metal.
This object is a desk.
This is made of metal.
2) {3} ADF: No barbarian is gentleman.
No gentlemen are rude.
All barbarians are rude.
3) {2} BDE: Bald people are intelligent.
Raman is bald.
Raman is intelligent.

Regards,

Kumar.:cool:

[virendra]

Hi Kumar,

Thanx for your Suggestions, I am already working on it and it will take some time.

About Answers:

even i do not know. Let me solve and I will discuss.

[LajjaPatel]

The answer to first Question is option (4).
The logical sequence is related and statement F is logically derived from

Statements B followed by D.

The answer to second Question is option (2)
The logical sequence is related and statement E is logically derived from

Statements B followed by C.


The answer to third Question is Option (2).
The logical sequence is related and statement E is logically derived from

Statements B followed by D.

[SwapnaNair]

My answers are as follows:

1) Option 4
2) Option 4
3) Option 2

Is that correct? Will try posting the explanations tomorrow.

[virendra]

Hi as you see, Swapna says Answer option (4) is roght for Question 2.

Can you defend your answer that (option 3 is correct).

and why not (2)?

[SheetalBhosle]

Hi Viru,

I dunt have proper explaination 4 them,

But according to me the answers are:

1) 4
2) 2
3) 2

I hope they are rite :)

[RonakVasa]

This questions contains six statements followed by four sets of
combinations of three. Choose the set in which the statements are logically related.
.......


My Responses for each are as follows :


1.
A. Metal is good material for desks.
B. Desks are made of metal.
C. This object is not a desk.
D. This object is a desk.
E. This object is not made of metal.
F. This is made of metal.

1.ADF 2.BCE 3. ABD 4. BDF


Solution is [4]. BDF
Explanation :
ADF : Metal is just a good material so it doesnt imply that all desks are made of Metal
BCE: Its is not said that only desks are made of Metal. hence even if it isnt a desk there is a probability existing that its made of Metal
ABD : Completely irrelevant Logic
BDF : Correct Option. It says that the desks are made of only metal and thus if it is a desk it has to be of metal


2.
A. No Afgani is gentleman.
B. Some gentlemen are Afgani.
C. Some gentlemen are rude.
D. No gentlemen are rude.
E. Some Afgani are not rude.
F. All Afgani are rude.

1.ABE 2.BCE 3. ADF 4. BDE


Solution is [4].BDE
Explanation :
ABE : B contradicts A hence out of Question
BCE : There exists a probability where in none of the afghani is Rude....So a MAY BE option is definetly cancelled
ADF : Again a May Be Option so Out of Question
BDE : Correct Option .Here some Afghanis are a part of Gentlemen Group who arent Rude .... to E is a perfect follower of BD


3.
A. Some men are bald.
B. Bald people are intelligent.
C. Mohan is a man.
D. Mohan is bald.
E. Mohan is intelligent.
F. All men are intelligent.

1.ABF 2.BDE 3. BCD 4. BEF

Solution is
Explanation:
ABF : Some men are BALD so it can be definetly true that those some Men are Intelligent but a MAY BE option for the others.

BDE : Correct Option . It says all Those who are bald are intelligent. So if Mohan is BALD he has to be Intelligent.

BCD:FOUR diferent Variables in this : BALD , MOHAN , MEN, INTELLIGENT
Usually in a three statement Logical sentence the relation is between three variables and if more variables are involved than it stands a chance to be the wrong option

BEF :Again Four unrelated Options and out of Question

Four Variable Concept :
If in the First Two statements three Variables are involved and a Fourth variable is then introduced in the concluding statement than the option is definetly a wron one.
Also, if the first two statements donot have a Variable in Common
eg statement 1 : A implies B
statement 2: C implies D
than there exists no conclusion that can be derived as per logic from that 2 statements.


In these type of Questions try to play using options and not by finding a logic and thn searching for tht logic in the options
If u play by options thn u can see with each option if they are Logically 100% probable statements.