I am quite hot but become too cold if you remove the first two letters. What am I?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

You are mixing a mixture of cement and Sand with five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four-gallon bucket and a seven-gallon bucket and neither has graduation marks. Find a method to measure five gallons.

Eight of us go fourth, not back, to protect our king from an attack. What are we?

Which is the smallest number that you can write using all the vowels exactly once?

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

Which is faster, Heat or Cold ? Explain.

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

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.