Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

Can you decipher the two rows to find the hidden word?

Can you find the missing piece of the Porsche?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

What number should come in place of the question mark below?

When can we add 2 to 11 and get 1 as the correct answer?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

Christina is practising her dance steps along with her friends. In a particular sequence, all of them form a row. At that point, Niharika is standing in the 4th position from either end of the row.
Can you find out how many girls are practising together?