Answer: C) 042 Explanation: From all the hints given,  only 042 satisfies and it unlocks the key.

Answer: C) Glass Explanation: Sound is a mechanical vibration and needs a medium for propagation. The higher the density of the medium, the faster the sound travels. So, sound cannot travel through vacuum.   As the sound travels faster in solids than liquids and gases, sound travels faster in the glass than Air and water.

Answer: B) Mickey Mouse Explanation: Mickey Mouse was the first non-human to win an Oscar in 1932. Walt Disney won the first of his many Oscars for the creation of Mickey Mouse.

Answer: C) Indus River Explanation: The name India is originally derived from the name of the river Sindhu (Indus River).

Answer: A) Rs. 5000 Explanation: Let the amount invested by saketh = RS. p Now, that of sandeep = 20,000 x 6 saketh = 12 x p Ratio of their earnings = 120000 : 12p = 6000 : (9000 - 6000) => 12000012p = 60003000 => p= Rs. 5000 Hence, the amount investe by saketh  = Rs. p  = Rs. 5000.

Answer: D) 2.25 % Explanation: SP of each car is Rs. 404415, he gains 15% on first car and losses 15% on second car. In this case, there will be loss and percentage of loss is given by = [(profit%)(loss%)]/100 = (15)(15)/100 % = 2.25%

Answer: B) Brian Lara Explanation: Virat Kohli surpasses Brian Lara with sixth Test double hundred as captain. After reaching the milestone, Virat Kohli became the first captain to score six double tons in Test cricket. He has also become the first player to score six double centuries in just a span of 17 months. He also became the second Indian to score back-to-back double centuries, only after Vinod Kambli. Apart from him, the only other cricketers who have scored back-to-back double Test tons are Wally Hammond, Don Bradman, Kambli, Kumar Sangakkara and Michael Clarke.

Answer: B) 12.5% Explanation: Let p% of a day is 3 hrs. We know that a day has 24 hrs. => p x 24/100 = 3 => p = 300/24 => p = 12.5%   Hence, 3 hrs is 12.5% of a day.