I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

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

If two's company, and three's a crowd, then whats four and five ?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

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

What is the longest word in the dictionary?

There is a hypothetical state between the USA and Mexico border 'Tango'.
Here 70 percent of the population have defective eyesight, 75 percent are hard of hearing, 80 percent have Nose trouble and 85 percent suffer from allergies, what percentage (at a minimum) suffer from all four ailments?

John is a strange liar.

He lies on six days of the week, but on the seventh day, he always tells the truth.

He made the following statements on three successive days:

Day 1: "I lie on Monday and Tuesday."
Day 2: "Today, it"s Thursday, Saturday, or Sunday."
Day 3: "I lie on Wednesday and Friday."

On which day does John tell the truth?

I don't get anymore wetter, no matter how much rain falls on me.

What number comes next in the series?

5 15 5 18 5 24 14 20 _