Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

When 99 is considered higher than 100?

Can you start the fire using two pieces of wood?

Rose, Lily and Jasmine decided to buy flowers for their moms on Mother's Day. One of them bought lilies, the other roses, and the third one jasmines.
'It's funny!' said the girl with roses, 'we bought roses, jasmines and lilies, but none of us bought the flowers matching her name'.
'You're right!', said Lily.
What kind of flowers did each of the girls buy?

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.

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

what one word does the below rebus identifies?

Solve the mathematical equation in the picture below.