A) true | B) false |

C) uncertain | D) none |

Explanation:

Because the first two statements are true, Eric is the youngest of the three, so the third statement must be false

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) 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.