Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

Spot what is wrong here in below Picture?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

What word begins and ends with an E, but has only one letter?

What begins with T, ends with T, and has T in it?

What kind of band never plays music?