What four weights can be used to balance from 1 to 30 pounds?

Why is the Hole below a Lock?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

Why is Saturday stronger than Monday?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Decode below rebus
D
N
A
T
S , D

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

What part of the chicken has the most feathers?

In a contest, four fruits (an apple, a banana, an orange, and a pear) have been placed in four closed boxes (one fruit per box). People may guess which fruit is in which box. 123 people participate in the contest. When the boxes are opened, it turns out that 43 people have guessed none of the fruits correctly, 39 people have guessed one fruit correctly, and 31 people have guessed two fruits correctly.
How many people have guessed three fruits correctly, and how many people have guessed four fruits correctly

Can you find a five letter word that is left with only two letters if one is removed?