During the days of shivering winter when everyone
covered themselves from head to toe to escape from
cold, the school of two brilliant micro-spies Zara and Waleed
was completely covered with snow.

When they came to school that morning Anis, a very close
friend of Zara and Waleed was shivering with cold and had
a small muffler with him with which he was trying to cover
himself as much as he can. Zara asked to help him, but he
does not want any favor from anyone because he was poor
and he thinks everybody pity on him.

They went into their respective classrooms. Anis kept his
muffler and went to the computer class next door as the
computer class consist heater in it. When he came
back after an hour and realized that, his muffler was
missing. After searching it for about half an hour, he
told this incidence to the teacher. However, the teacher
was busy with her own issues she was unable to help him.

Then Anis narrated this story to his mastermind friends
Zara and Waleed. Finally, they assured Anis that he
would get his muffler back that too in few hours only.

During the lunch break, Zara and Waleed both went to Anis’s class and they started inquiring. Zara began to question Anis’s fellow classmates and by that time, Waleed examined the entire classroom. While examining he found some pieces of pencil rind near Anis desk where the muffler was kept by Anis. Waleed called Anis and asked him if he has sharpened his pencil. Anis informed that he did not even remove his pencil yet, so how will he sharpen it.

This thing gave a clue to Waleed and he asked Zara to check pencil of all the students in the class and
see if the pencil rind found near Anis desk was similar to any of them? After checking all the pencils, they
found most of the students were having the same pencil similar to the rind. Now what? They were
confused again. And by that time the break got over. Zara and Waleed went to their class but could not
forget the rind because this clue confirmed that the muffler is took by anyone of Anis’s classmate only.