Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

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

Can you place three balls such that the equation shown in the picture holds true?

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.

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.

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

What can go through glass without breaking it?