A) 2 p.m. on Tuesday | B) 2 p.m. on Wednesday |

C) 3 p.m. on Thursday | D) 1 p.m. on Friday |

Explanation:

Time from 12 p.m. on Monday to 2 p.m. on the following Monday = 7 days 2 hours = 170 hours.

The Watch gains min. or min.in 170 hrs.

Now, min.are gained in 170 hrs.

2 min.are gained in hrs=50 hrs

Watch is correct 2 days 2 hrs. after 12 p.m. on Monday *i.e.,* it will be correct at 2 p.m. on Wednesday

A) 541 times | B) 540 times |

C) 450 times | D) 275 times |

Explanation:

There are 60 minutes in an hour.

In ¾ of an hour there are (60 × ¾) minutes = 45 minutes.

In ¾ of an hour there are (60 × 45) seconds = 2700 seconds.

Siren sounds for every 5 seconds.

In 2700 seconds = 540 times.

The count start after the first sound, the Siren will sound 541 times in ¾ of an hour.

A) 5 degrees | B) 10 degrees |

C) 15 degrees | D) 25 degrees |

Explanation:

Since at 4 : 20 the minute hand will be at 4 and the angle between them will be same as the distance covered in degree by the hour hand in 20 minutes.

Required angle = distance of hour hand = speed × time = × 20 =10 degrees.