A) February 23 | B) February 25 |

C) February 26 | D) February 28 |

Explanation:

**National Science Day** is celebrated in India on 28 February each year to mark the discovery of the Raman effect by Indian physicist Sir Chandrashekhara Venkata Raman on 28 February 1928.

A) Priyanka Chopra | B) Shilpa Shetty |

C) Kangana Ranaut | D) Anushka Sharma |

Explanation:

The government has roped in actress Shilpa Shetty as a brand ambassador for the Modi government's cleanliness initiative Swachh Bharat Mission.

The 41-year-old actress will feature in TV and radio campaigns aimed at discouraging people from littering on roads. Soon, campaign posters featuring her will be displayed at various places across the country.

A) Quinton de Kock | B) Hayley Williams |

C) Ben Stokes | D) Virat Kohli |

Explanation:

Indian international cricketer **Virat Kohli **has named as the '**Captain of the Year'** at the 10th annual ESPNcricinfo Awards. Kohli led India to nine wins out of 12 Tests in the year 2016.

♦ The ESPNcricinfo awards honour the best batting and bowling performances across the international formats of the game in the preceding calendar year.

♦ This year ESPNcricinfo introduced awards for women’s cricket across all three international formats.

A) 1009 | B) 991 |

C) 2000 | D) 1000 |

Explanation:

Given total number of rats = 999919

999919 = 1000000 - 81 = = (1000+9)(1000-9) = 1009 x 991.

Since there were more rats than there were cats, 991 cats killed 1009 rats each.

A) 3/91 | B) 2/73 |

C) 1/91 | D) 3/73 |

Explanation:

In a circle of n different persons, the total number of arrangements possible = (n - 1)!

Total number of arrangements = n(S) = (15 – 1)! = 14 !

Taking three persons as a unit, total persons = 13 (in 4 units)

Therefore no. of ways for these 13 persons to around the circular table = (13 - 1)! = 12!

In any given unit, 3 particular person can sit in 3!. Hence total number of ways that any three person can sit =

n(E) = 12! X 3!

Therefore P (E) = probability of three persons sitting together = n(E) / n(S) = 12! X 3 ! / 14!

= 12!x3x2 / 14x13x12! = 6/14x13 = 3/91