Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Complete the table series riddle by finding the number that can replace "??".

Two fathers and two sons went fishing one day. They were there the whole day and only caught 3 fish. One father said, that is enough for all of us, we will have one each. How can this be possible?

By what process could you make a 'Tea-Table' into food?

How many triangles can you count in the figure given?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145