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

How many triangles can you find in this given picture?

On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?

A bank customer had $100 in his account. He then made 6 withdrawals. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left
$50 $50
$25 $25
$10 $15
$8 $7
$5 $2
$2 $0
----- -----
$100 $99

Why are the Totals not tallying?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

Find the smallest sentence with all the English alphabet.

Sachin bought a car with a strange 5 digit numbered plate.The water image of the number is 78633 more than my car number. All the digits of car number are distinct.

What is the original number on number plate?