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The bar graph given below represents the number of boys in a school using three apps for three months. Number of boys using Whatsapp in February is how much percent more than the number of boys using Hike in February?

The spy sent Tintin four messages which consists of only the letters from A to D, that are encoded in the following way: A, B, C, D are equivalent to 00, 01, 10, 11 respectively. An operation ‡ is defined over the numbers 0 and 1 as All messages that Tintin receives are encoded as (Message) ‡ (Key) where Key is a fixed word that is used for encoding all the Messages. But, sadly, Tintin does not know the key. BDBDBD, AAAA, BDBBBB, DAACCC . You forgot the messages corresponding to these encodings but you do remember that all of these four messages had ADC as its substring. Few seconds later, Tintin receives another message that was encoded as BBDBD. Can you tell what the actual message could possibly be? Not clear? Want an example – let us have two messages AB and CD, and let the key be BC, then (({:(" "AB),(+BC):})/(BD))/ (({:(" "CD),(+BC):})/(DB))/ are the corresponding cypher texts. [Hint: if ("word"1)‡("word"2)=("word"3) " then " ("word"1)=("word"2)‡("word"3)]

The line graph given below shows the number of text messages received by Keerthi during a week. Study The graph carefully and answer the questions that follow. (i) On which day did Keerthi receive exactly 20 text message ? (iii) Find the total number of text messages received by Keerthi in week.

Messages are conveyed by arranging four white,one blue,and three red flags on a pole. Flags of the same color are alike.If a message is transmitted by the order in which the colors are arranged,the total number of messages that can be transmitted if exactly six flags are used is a.45 b.65 c.125 d.185