Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

Spot what is wrong here in below Picture?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Why do you find that most of the buildings are deprived of the 13th floor?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

Can you replace the question mark with the correct number?

Count the number of triangles in the below picture?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?