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- Question
In an objective competitive exam, a correct answer score 4 marks and on a wrong answer 2 marks are negatively added. A student scores 420 marks from 150 question. How many answers were correct ?
Options- A. 145
- B. 138
- C. 125
- D. 120
- Correct Answer
- 120
Explanationlet x be the correct answer and y be the wrong answer
so the total number of questions is (x + y) = 150.....(1)
=> 4x - 2y = 420.....(2)
By solving (1) & (2), we get
=> 6x = 720
hence x = 120
Therefore, number of correct answers are 120. - 1. Directions: Seven different boxes A, B, C, D, E, F and G of different colours viz., Orange, Pink, Purple, Yellow, Blue, Red and Green are arranged one above the other. The box at the bottom of arrangement is numbered 1, the above box is numbered 2 and so on. B is immediately above E. More than two boxes are above the Orange box. The Yellow box is immediately below A. Only one box is between the Orange box and F. G is immediately above the Red box. Only one box is between B and the Pink box. Only two boxes are between the Pink and the Green box. Only two boxes are between the Yellow box and the Orange box. The Purple box is neither at the top nor at the bottom of the arrangement.B is above Pink box. C is immediately above F. Neither C nor G is a Yellow box. G is not a Orange box. Question: Which combination represents the position of C and its colour?
Options- A. 6-Green
- B. 6-Red
- C. 5-Purple
- D. 7-Blue Discuss
- 2. A man wears socks of two colours - Black and White. He has altogether 30 black socks and 10 brown socks in a drawer. Supposing he has to take out the socks in the dark, how many must he take out to be sure that he has a matching pair ?
Options- A. 3
- B. 4
- C. 5
- D. 2 Discuss
- 3. A 300m race is held between two players running 3m/s and 5m/s in swimming pool of 50m long. how many times the two player meet in opposite direction till the faster one completes the race ?
Options- A. 3 times
- B. 4 times
- C. 5 times
- D. 2 times Discuss
- 4. M and N have children A and B. F is spouse of B. D is child of F. P is son in law of N. K is kid of P. Who is male chiled of M and N ?
Options- A. B
- B. A
- C. None
- D. Can't be determined Discuss
- 5. A family has a man, his wife, their four sons and their wives and one daughter. The family of every son also has 3 sons and one daughter. Find out the total number of female members in the family ?
Options- A. 12
- B. 8
- C. 9
- D. 10 Discuss
- 6. One paper is equally folded 35 times, then what is the new thickness of the paper ?
Options- A. T(2^50)
- B. 50T
- C. 2 x 50 T
- D. T/50 Discuss
- 7. Choose the most essential part for the word given below from the following options ? Shoe
Options- A. Lace
- B. Sole
- C. Leather
- D. Walking Discuss
- 8. Between two book-ends in your study are displayed your four favourite love story books. If you decide to arrange the four books in every possible combination and moved just one book every minute, how long would it take you ?
Options- A. 54 minutes
- B. 32 minutes
- C. 48 minutes
- D. 24 minutes Discuss
- 9. Choose the option which indicates a valid argument containing logically related statements that is, where the third statement is a conclusion drawn from the preceding two statements. A. Some straight forward things are people B. All Perennial things are cats C. Only cats are Perennial D. All Perennial things are People E. Some Straight forward things are cats F. Some Straight forward things are Perennial
Options- A. BCA
- B. CFD
- C. DFA
- D. EAB Discuss
- 10. If 15 men 4 hours per day works for 14 days get Rs.35/- then how many men required if the work is 8 hours per day for 10 days they get 50/- ?
Options- A. 12
- B. 13
- C. 14
- D. 15 Discuss
Logic problems
Search Results
Correct Answer: 7-Blue
Explanation:
From the given information the arrangement can be done as follows:
Position Box Colour
7 C Blue
6 F Green
5 B Purple
4 E Orange
3 G Pink
2 A Red
1 D Yellow
Correct Answer: 3
Explanation:
Given there are 2 coloured socks, which is black and White
Let suppose 3 is choosen at random
then three conditions arises
1. all are black
2.all are white
3. either it will have 2 black and 1 white or it will have 2 white and 1 black
so in all the conditions as above mentioned we are getting atleast one pair of socks.
So, he must take out 3 to be sure that he has a matching pair.
Correct Answer: 3 times
Explanation:
Let us assume A is the faster and B is slower, A takes 10s to finish a lap of 50 m, B takes 17s(approx) to finish a lap of 50 m.
So at 11th sec A starts his 2nd lap by the time B will be in between so that is the first time they will meet each other, at 21st sec A starts his 3rd lap by the time B will be coming back to finish his 2nd lap. So that is the second time they meet in opposite. Then at 31st sec A will start his 4th lap by the time B would not even finish 2nd lap as he take 34(2*17) sec to finish 2 laps. So at 35th sec B will start his 3rd lap by the time A will be coming back to finish his 4th lap in the half way so they will meet 3rd time. At 41st sec A will start its fifth lap by the time B will be going to finish 3rd lap in same direction. At 50th second both will complete A's 5th lap and B's 3rd lap. So they will start next lap(A's 6th and B's 4th) from the same point in same direction. And A will finish the race after completing 300m(6*50) total distance and then they wont meet opposite to each other.
So totally they met 3 times in opposite direction.
Correct Answer: B
Explanation:
Spouse means a person's partner in marriage, it can be male or female.
But given F is spouse of B
And P is Son in law of N
Relation between F and B
Relation between P and A only
and p is male So, A must be female
=> B is male child.
Correct Answer: 10
Explanation:
1) Man's wife. = 1
2) Man's 4 son's wives. = 4
3) Man's daughter. = 1
4) 4 son's has each one daughter. = 4
Therefore, total number of female members in the family = 1+4+1+4 = 10.
Correct Answer: T(2^50)
Explanation:
Let initial thickness of the paper be 'T'
after first fold it will be '2T' =
after second fold it will be '4T' =
after 50th fold it will be T x (
T)
Correct Answer: Sole
Explanation:
All shoes have a sole of some sort.Not all shoes are made of leather (choice b); nor do they all have laces (choice c).Walking (choice d) is not essential to a shoe.
Correct Answer: 48 minutes
Explanation:
Possible arrangements for 4 books are 4x3x2x1 = 24
For making a new arrangement, two books are required to be moved.
One book takes one minute, then for 2 books
So total 24 x 2 = 48 mins.
Correct Answer: DFA
Correct Answer: 15
Explanation:
We know
=>
=> M = 15
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