Random Puzzles 

Workings

Hint
Try this with a watch or clock yourself.

Answer
Ten times.

Try this with a watch or clock yourself!

Workings

Hint
The chemical symbol for iron is Fe.

Answer
Yttrium.

The element's symbols are spelling February:

   iron (Fe) + bromine (Br) + uranium (U) + argon (Ar) + yttrium (Y)

Workings

Hint
What do the fractions add up to?

Answer
There are 980 coins in the collection.

Reasoning
Using fractions:

   ¹/₂ + ¹/₄ + ¹/₅ = ¹⁹/₂₀

The remaining ¹/₂₀ is 49 coins.

Therefore, the ²⁰/₂₀ must equal 20 lots of 49 = 980.

Alternative Reasoning
Using percentages:

   50% + 25% + 20% = 95%

The remaining 5% is 49 coins.

If 5% is 49 coins, 10% is 98 coins, 100% is 980 coins.

Double-Checking
¹/₂ of 980 is 490
¹/₄ of 980 is 245
¹/₅ of 980 is 196
and the remaining 49 coins.

And 490 + 245 + 196 + 49 = 980.

Workings

Hint
Think of the alphabet.

Answer
25 for Y.

These are the positions of the letters of the alphabet, and they are spelling Donkey.