A) 145 | B) 138 |

C) 125 | D) 120 |

Explanation:

let 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.

A) Moss | B) No |

C) Stone | D) A |

Explanation:

For the input "A rolling stone gathers no moss", the steps followed are:

Step **1**: rolling A stone gathers no moss

Step **2**: rolling stone A gathers no moss

Step **3**: rolling stone gathers A no moss

Step **4**: rolling stone gathers no A moss

After 4 steps the fifth word is **"A"**.

A) 17 minutes | B) 20 minutes |

C) 34 minutes | D) 12 minutes |

Explanation:

First send 17 and 7. After 7 minutes, 7 is at finish and 17 needs 10 more minutes to complete his travel. now send 13. After 10 minutes 17 reaches finish and 13 needs 3 more minutes to complete. now send 3. both 3 and 13 reach destination at the same time after 3 minutes. hence the time taken is 7+10+3=20 minutes.

A) 54 minutes | B) 32 minutes |

C) 48 minutes | D) 24 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.

A) 3 | B) 4 |

C) 5 | D) 2 |

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.

A) B | B) A |

C) None | D) Can't be determined |

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.

A) T(2^50) | B) 50T |

C) 2 x 50 T | D) T/50 |

Explanation:

Let initial thickness of the paper be 'T'

after first fold it will be '2T' = ${2}^{1}T$

after second fold it will be '4T' = ${2}^{2}T$

after 50th fold it will be T x (${2}^{50}$T)

A) Aadya | B) Kalyan |

C) Raju | D) Rohan |

Explanation:

Suppose Sweety is sitting between Rohan and Karthik such that she is to the right of him.....then as Raju is opposite to Rohan then Raju must be to the left of Karthik.