A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Do You See It?

John was writing his first book. After saving the document, he locked his laptop with a password and mentioned some phrases for the hint box.

A friend of his tried opening his laptop but found out that it was password protected. Following is the hint that appeared.
1 mobile 3 books 2 roars 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches.

Can you help him in cracking the password?

How can you take 2 from 5 and leave 4?

What question can you never answer yes to?

What Deficiency does the below rebus represent?

VIT_MIN

What will you call your mother's brother's brother-in-law?

Can you solve the below tricky visual equation?

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?